{"id":83388,"date":"2025-11-05T09:00:00","date_gmt":"2025-11-05T14:00:00","guid":{"rendered":"https:\/\/www.ss396.com\/cars\/?p=83388"},"modified":"2025-11-03T13:39:50","modified_gmt":"2025-11-03T18:39:50","slug":"th350-vs-th400-vs-700r4-vs-200-4r-the-gm-transmission-showdown","status":"publish","type":"post","link":"https:\/\/www.ss396.com\/cars\/th350-vs-th400-vs-700r4-vs-200-4r-the-gm-transmission-showdown\/","title":{"rendered":"TH350 vs. TH400 vs. 700R4 vs. 200-4R: The GM Transmission Showdown"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"83388\" class=\"elementor elementor-83388\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2931b3a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2931b3a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-893a7a9\" data-id=\"893a7a9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3966f86 elementor-widget elementor-widget-heading\" data-id=\"3966f86\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which Classic GM Transmission Is Best For Your Ride?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f94c199 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f94c199\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7558710\" data-id=\"7558710\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6d80f30 elementor-widget elementor-widget-text-editor\" data-id=\"6d80f30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>TH350? M22?When it comes to classic GM drivetrains, few debates spark more garage talk than which transmission to go with: manual or automatic? If you&#8217;re in the latter group, you have a few choices. From the bulletproof TH400 that powered muscle-bound big blocks to the compact, street-friendly TH350, and the later overdrive options like the 700R4 and 200-4R, each has earned its reputation through decades of abuse. Choosing the right one isn\u2019t just about bolt patterns, it\u2019s about gearing, physical size, torque capacity, drivability, and how you plan to use your car. You might be building a weekend cruiser, a highway hauler, or a quarter-mile bruiser but understanding the strengths and quirks of these four GM heavy hitters will help you match your transmission to your horsepower, budget, and lifestyle.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-942773e elementor-widget elementor-widget-image\" data-id=\"942773e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"720\" height=\"720\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/PA35103.jpg\" class=\"attachment-large size-large wp-image-83400\" alt=\"TH350\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/PA35103.jpg 720w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/PA35103-300x300.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/PA35103-150x150.jpg 150w\" sizes=\"(max-width: 720px) 100vw, 720px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">TH350 Automatic Transmission<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7909427 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7909427\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-29c5356\" data-id=\"29c5356\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-00ef30b elementor-widget elementor-widget-heading\" data-id=\"00ef30b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Short Take<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-de3b827 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"de3b827\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2cbe52a\" data-id=\"2cbe52a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-23039d5 elementor-widget elementor-widget-text-editor\" data-id=\"23039d5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"290\" data-end=\"393\"><p data-start=\"292\" data-end=\"393\"><strong data-start=\"292\" data-end=\"302\">TH350:<\/strong> Light, compact 3-speed. Cheap, easy, good street\/strip up to moderate power. No overdrive.<\/p><\/li><li data-start=\"394\" data-end=\"477\"><p data-start=\"396\" data-end=\"477\"><strong data-start=\"396\" data-end=\"406\">TH400:<\/strong> Heavy-duty 3-speed. Factory brute for big torque builds. No overdrive.<\/p><\/li><li data-start=\"478\" data-end=\"631\"><p data-start=\"480\" data-end=\"631\"><strong data-start=\"480\" data-end=\"519\">700R4 (early 4L60, non-electronic):<\/strong> 4-speed with deep 1st (3.06) + 0.70 OD. Great for street cars needing highway manners. Critical TV cable setup.<\/p><\/li><li data-start=\"632\" data-end=\"816\"><p data-start=\"634\" data-end=\"816\"><strong data-start=\"634\" data-end=\"645\">200-4R:<\/strong> 4-speed with good ratios (2.74\/0.67), compact case, usually dual-pattern bell. Loved for G-bodies and classic swaps. Critical TV cable; build it right and it\u2019s a sleeper.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8ab726f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8ab726f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7b38b44\" data-id=\"7b38b44\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2644ca3 elementor-widget elementor-widget-heading\" data-id=\"2644ca3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Gear Ratios - Stock<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-61e66e0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"61e66e0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-adb42a6\" data-id=\"adb42a6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-961635c elementor-widget elementor-widget-text-editor\" data-id=\"961635c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"845\" data-end=\"1089\"><thead data-start=\"845\" data-end=\"888\"><tr data-start=\"845\" data-end=\"888\"><th data-start=\"845\" data-end=\"860\" data-col-size=\"sm\">Transmission<\/th><th data-start=\"860\" data-end=\"866\" data-col-size=\"sm\">1st<\/th><th data-start=\"866\" data-end=\"872\" data-col-size=\"sm\">2nd<\/th><th data-start=\"872\" data-end=\"878\" data-col-size=\"sm\">3rd<\/th><th data-start=\"878\" data-end=\"888\" data-col-size=\"sm\">4th\/OD<\/th><\/tr><\/thead><tbody data-start=\"915\" data-end=\"1089\"><tr data-start=\"915\" data-end=\"953\"><td data-start=\"915\" data-end=\"927\" data-col-size=\"sm\"><strong data-start=\"917\" data-end=\"926\">TH350<\/strong><\/td><td data-col-size=\"sm\" data-start=\"927\" data-end=\"934\">2.52<\/td><td data-col-size=\"sm\" data-start=\"934\" data-end=\"941\">1.52<\/td><td data-col-size=\"sm\" data-start=\"941\" data-end=\"948\">1.00<\/td><td data-col-size=\"sm\" data-start=\"948\" data-end=\"953\">\u2014<\/td><\/tr><tr data-start=\"954\" data-end=\"992\"><td data-start=\"954\" data-end=\"966\" data-col-size=\"sm\"><strong data-start=\"956\" data-end=\"965\">TH400<\/strong><\/td><td data-col-size=\"sm\" data-start=\"966\" data-end=\"973\">2.48<\/td><td data-col-size=\"sm\" data-start=\"973\" data-end=\"980\">1.48<\/td><td data-col-size=\"sm\" data-start=\"980\" data-end=\"987\">1.00<\/td><td data-col-size=\"sm\" data-start=\"987\" data-end=\"992\">\u2014<\/td><\/tr><tr data-start=\"993\" data-end=\"1042\"><td data-start=\"993\" data-end=\"1005\" data-col-size=\"sm\"><strong data-start=\"995\" data-end=\"1004\">700R4<\/strong><\/td><td data-col-size=\"sm\" data-start=\"1005\" data-end=\"1016\">3.06<\/td><td data-col-size=\"sm\" data-start=\"1016\" data-end=\"1023\">1.62<\/td><td data-col-size=\"sm\" data-start=\"1023\" data-end=\"1030\">1.00<\/td><td data-col-size=\"sm\" data-start=\"1030\" data-end=\"1042\">0.70<\/td><\/tr><tr data-start=\"1043\" data-end=\"1089\"><td data-start=\"1043\" data-end=\"1056\" data-col-size=\"sm\"><strong data-start=\"1045\" data-end=\"1055\">200-4R<\/strong><\/td><td data-col-size=\"sm\" data-start=\"1056\" data-end=\"1063\">2.74<\/td><td data-col-size=\"sm\" data-start=\"1063\" data-end=\"1070\">1.57<\/td><td data-col-size=\"sm\" data-start=\"1070\" data-end=\"1077\">1.00<\/td><td data-col-size=\"sm\" data-start=\"1077\" data-end=\"1089\">0.67<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8ce62f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8ce62f5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-bef9547\" data-id=\"bef9547\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5461e6a elementor-widget elementor-widget-text-editor\" data-id=\"5461e6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1091\" data-end=\"1113\">What these ratios mean:<\/p><ul data-start=\"1114\" data-end=\"1281\"><li data-start=\"1114\" data-end=\"1226\"><p data-start=\"1116\" data-end=\"1226\"><strong data-start=\"1116\" data-end=\"1127\">Launch:<\/strong> 700R4\u2019s 3.06 first is the stump-puller; 200-4R is next. TH350\/400 feel \u201clonger\u201d out of the hole.<\/p><\/li><li data-start=\"1227\" data-end=\"1281\"><p data-start=\"1229\" data-end=\"1281\"><strong data-start=\"1229\" data-end=\"1240\">Cruise:<\/strong> 700R4 drops RPM ~30% in OD; 200-4R ~33%.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bba2743 elementor-widget elementor-widget-image\" data-id=\"bba2743\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"796\" height=\"473\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/281f5bff76065b27ab155f6b044ea87c.jpg\" class=\"attachment-large size-large wp-image-83398\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/281f5bff76065b27ab155f6b044ea87c.jpg 796w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/281f5bff76065b27ab155f6b044ea87c-300x178.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/281f5bff76065b27ab155f6b044ea87c-768x456.jpg 768w\" sizes=\"(max-width: 796px) 100vw, 796px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f1b2fbc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1b2fbc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f39bd08\" data-id=\"f39bd08\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ba8f37e elementor-widget elementor-widget-heading\" data-id=\"ba8f37e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Physical Size, Mounting &amp; Driveline Bits<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-06502c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"06502c6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2896914\" data-id=\"2896914\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fab0222 elementor-widget elementor-widget-text-editor\" data-id=\"fab0222\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"1341\" data-end=\"1573\"><p data-start=\"1343\" data-end=\"1443\"><strong data-start=\"1343\" data-end=\"1353\">TH350:<\/strong> Three tail lengths existed. The <em data-start=\"1386\" data-end=\"1398\">short-tail<\/em> (most common) plays easiest in A\/F\/X bodies.<\/p><ul data-start=\"1446\" data-end=\"1573\"><li data-start=\"1446\" data-end=\"1498\"><p data-start=\"1448\" data-end=\"1498\">Output: 27-spline yoke (common GM small-yoke).<\/p><\/li><li data-start=\"1501\" data-end=\"1531\"><p data-start=\"1503\" data-end=\"1531\">Kickdown: cable to carb.<\/p><\/li><li data-start=\"1534\" data-end=\"1573\"><p data-start=\"1536\" data-end=\"1573\">Control: vacuum modulator + governor.<\/p><\/li><\/ul><\/li><li data-start=\"1574\" data-end=\"1768\"><p data-start=\"1576\" data-end=\"1628\"><strong data-start=\"1576\" data-end=\"1586\">TH400:<\/strong> Multiple tails too. Bigger case, heavier.<\/p><ul data-start=\"1631\" data-end=\"1768\"><li data-start=\"1631\" data-end=\"1668\"><p data-start=\"1633\" data-end=\"1668\">Output: 32-spline (large-yoke).<\/p><\/li><li data-start=\"1671\" data-end=\"1726\"><p data-start=\"1673\" data-end=\"1726\">Kickdown: electric solenoid (switch at throttle).<\/p><\/li><li data-start=\"1729\" data-end=\"1768\"><p data-start=\"1731\" data-end=\"1768\">Control: vacuum modulator + governor.<\/p><\/li><\/ul><\/li><li data-start=\"1769\" data-end=\"2059\"><p data-start=\"1771\" data-end=\"1954\"><strong data-start=\"1771\" data-end=\"1781\">700R4:<\/strong> Overall length roughly like a TH350 long-tail \/ TH400 short-tail. Crossmember usually slides rearward a bit; driveshaft often needs shortening from a TH350 short-tail swap.<\/p><ul data-start=\"1957\" data-end=\"2059\"><li data-start=\"1957\" data-end=\"1986\"><p data-start=\"1959\" data-end=\"1986\">Output: 27-spline yoke.<\/p><\/li><li data-start=\"1989\" data-end=\"2059\"><p data-start=\"1991\" data-end=\"2059\">TV cable (line pressure!) to carb\/TBI\/TPI; lockup converter.<\/p><\/li><\/ul><\/li><li data-start=\"2060\" data-end=\"2330\"><p data-start=\"2062\" data-end=\"2197\"><strong data-start=\"2062\" data-end=\"2073\">200-4R:<\/strong> Overall length very close to a TH350 short-tail; often a near-bolt-in on length. Mount sits slightly rearward vs TH350.<\/p><ul data-start=\"2200\" data-end=\"2330\"><li data-start=\"2200\" data-end=\"2229\"><p data-start=\"2202\" data-end=\"2229\">Output: 27-spline yoke.<\/p><\/li><li data-start=\"2232\" data-end=\"2270\"><p data-start=\"2234\" data-end=\"2270\">TV cable + lockup converter.<\/p><\/li><li data-start=\"2273\" data-end=\"2330\"><p data-start=\"2275\" data-end=\"2330\">Bellhousing: frequently dual-pattern (Chevy + BOP).<\/p><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ce6a4c9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ce6a4c9\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2087cc8\" data-id=\"2087cc8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bcc2129 elementor-widget elementor-widget-text-editor\" data-id=\"bcc2129\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"2334\" data-end=\"2364\">Rule of thumb for swaps:<\/p><ul data-start=\"2367\" data-end=\"2641\"><li data-start=\"2367\" data-end=\"2462\"><p data-start=\"2369\" data-end=\"2462\"><strong data-start=\"2369\" data-end=\"2399\">From TH350 short \u279c 200-4R:<\/strong> often stock driveshaft fits; crossmember may move ~1\u20132&#8243;.<\/p><\/li><li data-start=\"2465\" data-end=\"2562\"><p data-start=\"2467\" data-end=\"2562\"><strong data-start=\"2467\" data-end=\"2496\">From TH350 short \u279c 700R4:<\/strong> driveshaft usually shorter; crossmember moves rearward.<\/p><\/li><li data-start=\"2565\" data-end=\"2641\"><p data-start=\"2567\" data-end=\"2641\"><strong data-start=\"2567\" data-end=\"2589\">TH400 \u279c either OD:<\/strong> check yoke (you\u2019ll go from 32-spline to 27-spline).<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bde51d2 elementor-widget elementor-widget-image\" data-id=\"bde51d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"768\" height=\"424\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/1620520649867.webp\" class=\"attachment-large size-large wp-image-83399\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/1620520649867.webp 768w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/1620520649867-300x166.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-275e681 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"275e681\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e40cd9\" data-id=\"7e40cd9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-675741b elementor-widget elementor-widget-heading\" data-id=\"675741b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Identify TH350, TH400, 700R4, 200R4<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-18ec751 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18ec751\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4c86874\" data-id=\"4c86874\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b0dda2a elementor-widget elementor-widget-text-editor\" data-id=\"b0dda2a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"2686\" data-end=\"2834\"><p data-start=\"2688\" data-end=\"2834\"><strong data-start=\"2688\" data-end=\"2698\">TH350:<\/strong> 13-bolt pan, roughly square with one corner cut; cable kickdown at throttle; vacuum modulator at rear passenger side; smaller case.<\/p><\/li><li data-start=\"2835\" data-end=\"3005\"><p data-start=\"2837\" data-end=\"3005\"><strong data-start=\"2837\" data-end=\"2847\">TH400:<\/strong> 13-bolt pan with an irregular \u201celephant ear\u201d bulge; no cable (electric kickdown plug on case); larger bell and main case; vacuum modulator at RR of case.<\/p><\/li><li data-start=\"3006\" data-end=\"3159\"><p data-start=\"3008\" data-end=\"3159\"><strong data-start=\"3008\" data-end=\"3018\">700R4:<\/strong> <strong data-start=\"3019\" data-end=\"3030\">16-bolt<\/strong> pan\u2014rectangle with an angled rear corner; has TV cable on the case; usually a 4-pin (or similar) electrical plug for lockup.<\/p><\/li><li data-start=\"3160\" data-end=\"3303\"><p data-start=\"3162\" data-end=\"3303\"><strong data-start=\"3162\" data-end=\"3173\">200-4R:<\/strong> <strong data-start=\"3174\" data-end=\"3185\">16-bolt<\/strong> pan that\u2019s almost square (more symmetric than 700R4); TV cable; case is shorter; many have dual-pattern bell.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9fbba35 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9fbba35\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c8bc045\" data-id=\"c8bc045\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-541b089 elementor-widget elementor-widget-heading\" data-id=\"541b089\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Strength, Use Cases, and Typical Limits<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-77c4d3b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"77c4d3b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4885f78\" data-id=\"4885f78\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d1ee860 elementor-widget elementor-widget-text-editor\" data-id=\"d1ee860\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"3364\" data-end=\"3518\"><p data-start=\"3366\" data-end=\"3518\"><strong data-start=\"3366\" data-end=\"3376\">TH350:<\/strong> ~300\u2013350 lb-ft in healthy form. Cheap to build, shifts nice. With upgrades (drums, sprags, frictions, valvebody) handles 450+ hp street duty.<\/p><\/li><li data-start=\"3519\" data-end=\"3666\"><p data-start=\"3521\" data-end=\"3666\"><strong data-start=\"3521\" data-end=\"3531\">TH400:<\/strong> Factory tank. 450\u2013500+ lb-ft stock; built versions live behind big-block torque and boosted combos. Heavier parasitic loss than TH350.<\/p><\/li><li data-start=\"3667\" data-end=\"3900\"><p data-start=\"3669\" data-end=\"3900\"><strong data-start=\"3669\" data-end=\"3679\">700R4:<\/strong> Early units (\u201982\u2013\u201984) weak. \u201985-up (30-spline input, aux VB) much better. Stock ~300\u2013350 lb-ft; built 700R4s handle serious power if done right. The TV cable is life or death\u2014misadjustment burns it down fast.<\/p><\/li><li data-start=\"3901\" data-end=\"4146\"><p data-start=\"3903\" data-end=\"4146\"><strong data-start=\"3903\" data-end=\"3914\">200-4R:<\/strong> Stock mid-300 lb-ft territory; the BRF\/\u201cGN\u201d code units are strongest from the factory. With proper internals (hardened stator, better drum\/sprag, valvebody, band), 200-4Rs live at 500\u2013600+ hp in street cars and shift sweet.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dffffd4 elementor-widget elementor-widget-image\" data-id=\"dffffd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/s-l1600-1024x576-1.jpg\" class=\"attachment-large size-large wp-image-83401\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/s-l1600-1024x576-1.jpg 1024w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/s-l1600-1024x576-1-300x169.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/s-l1600-1024x576-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">TH400 Automatic Transmission<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c83d98 elementor-widget elementor-widget-heading\" data-id=\"8c83d98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pros &amp; Cons of the TH350, TH400, 700R4, 200R4<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab76efe elementor-widget elementor-widget-text-editor\" data-id=\"ab76efe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 data-start=\"4168\" data-end=\"4177\">TH350<\/h3><p data-start=\"4178\" data-end=\"4383\"><strong data-start=\"4178\" data-end=\"4187\">Pros:<\/strong> Compact\/light; inexpensive; tons of parts; nice gear split for NA street cars; easy kickdown cable.<br data-start=\"4287\" data-end=\"4290\" \/><strong data-start=\"4290\" data-end=\"4299\">Cons:<\/strong> No OD; at highway speeds with 3.55+ gears it\u2019s buzzy; not as strong as TH400 stock.<\/p><h3 data-start=\"4385\" data-end=\"4394\">TH400<\/h3><p data-start=\"4395\" data-end=\"4606\"><strong data-start=\"4395\" data-end=\"4404\">Pros:<\/strong> Strongest factory core; tolerant of abuse; abundant heavy-duty parts; great for drag\/boost\/big cubes.<br data-start=\"4506\" data-end=\"4509\" \/><strong data-start=\"4509\" data-end=\"4518\">Cons:<\/strong> No OD; heavier; more parasitic loss; large-yoke output and length can complicate swaps.<\/p><h3 data-start=\"4608\" data-end=\"4617\">700R4<\/h3><p data-start=\"4618\" data-end=\"4899\"><strong data-start=\"4618\" data-end=\"4627\">Pros:<\/strong> <strong data-start=\"4628\" data-end=\"4647\">Deep 1st (3.06)<\/strong> for snappy launch with tall tires; 0.70 OD for freeway; common cores; lockup converter for cool cruising.<br data-start=\"4757\" data-end=\"4760\" \/><strong data-start=\"4760\" data-end=\"4769\">Cons:<\/strong> TV cable setup is critical; early cores weak; slightly larger\/longer than TH350 short\u2014often needs crossmember\/driveshaft changes.<\/p><h3 data-start=\"4901\" data-end=\"4911\">200-4R<\/h3><p data-start=\"4912\" data-end=\"5180\"><strong data-start=\"4912\" data-end=\"4921\">Pros:<\/strong> <strong data-start=\"4922\" data-end=\"4933\">0.67 OD<\/strong> (even taller than 700R4); compact; length close to TH350 short (easy swaps); many are dual-pattern bell; great ratio spacing.<br data-start=\"5067\" data-end=\"5070\" \/><strong data-start=\"5070\" data-end=\"5079\">Cons:<\/strong> Needs proper build to live at higher power; TV cable sensitivity; fewer \u201cjunkyard good\u201d cores today.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac31f91 elementor-widget elementor-widget-heading\" data-id=\"ac31f91\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Control Systems &amp; What They Mean<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63f474c elementor-widget elementor-widget-text-editor\" data-id=\"63f474c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"5222\" data-end=\"5339\"><p data-start=\"5224\" data-end=\"5339\"><strong data-start=\"5224\" data-end=\"5240\">TH350\/TH400:<\/strong> Vacuum modulator + governor control upshifts; tuning via modulator and governor weights\/springs.<\/p><\/li><li data-start=\"5340\" data-end=\"5448\"><p data-start=\"5342\" data-end=\"5448\">TH350 kickdown cable and TH400 electric kickdown just trigger downshifts\/full-throttle behavior.<\/p><\/li><li data-start=\"5449\" data-end=\"5714\"><p data-start=\"5451\" data-end=\"5714\"><strong data-start=\"5451\" data-end=\"5468\">700R4\/200-4R:<\/strong> TV cable controls line pressure, shift timing, and throttle feel\u2014not just kickdown. It must be set to spec (WOT pull-length and idle geometry). Add a lockup control (ECM, pressure switch, or aftermarket kit) for converter clutch.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-836f909 elementor-widget elementor-widget-heading\" data-id=\"836f909\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Real-World Cruise RPM (70 mph, 27\" tire)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d010326 elementor-widget elementor-widget-text-editor\" data-id=\"d010326\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"6065\" data-end=\"6125\"><em data-start=\"6065\" data-end=\"6125\">(Use this to feel the OD payoff. Numbers are approximate.)<\/em><\/p><div class=\"_tableContainer_1rjym_1\"><div class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"6127\" data-end=\"6397\"><thead data-start=\"6127\" data-end=\"6191\"><tr data-start=\"6127\" data-end=\"6191\"><th data-start=\"6127\" data-end=\"6139\" data-col-size=\"sm\">Rear Gear<\/th><th data-start=\"6139\" data-end=\"6159\" data-col-size=\"sm\">1:1 (TH350\/TH400)<\/th><th data-start=\"6159\" data-end=\"6174\" data-col-size=\"sm\">0.70 (700R4)<\/th><th data-start=\"6174\" data-end=\"6191\" data-col-size=\"sm\">0.67 (200-4R)<\/th><\/tr><\/thead><tbody data-start=\"6214\" data-end=\"6397\"><tr data-start=\"6214\" data-end=\"6259\"><td data-start=\"6214\" data-end=\"6225\" data-col-size=\"sm\"><strong data-start=\"6216\" data-end=\"6224\">3.08<\/strong><\/td><td data-col-size=\"sm\" data-start=\"6225\" data-end=\"6236\">2680 rpm<\/td><td data-col-size=\"sm\" data-start=\"6236\" data-end=\"6247\">1880 rpm<\/td><td data-col-size=\"sm\" data-start=\"6247\" data-end=\"6259\">1800 rpm<\/td><\/tr><tr data-start=\"6260\" data-end=\"6305\"><td data-start=\"6260\" data-end=\"6271\" data-col-size=\"sm\"><strong data-start=\"6262\" data-end=\"6270\">3.55<\/strong><\/td><td data-start=\"6271\" data-end=\"6282\" data-col-size=\"sm\">3090 rpm<\/td><td data-start=\"6282\" data-end=\"6293\" data-col-size=\"sm\">2165 rpm<\/td><td data-start=\"6293\" data-end=\"6305\" data-col-size=\"sm\">2070 rpm<\/td><\/tr><tr data-start=\"6306\" data-end=\"6351\"><td data-start=\"6306\" data-end=\"6317\" data-col-size=\"sm\"><strong data-start=\"6308\" data-end=\"6316\">3.73<\/strong><\/td><td data-start=\"6317\" data-end=\"6328\" data-col-size=\"sm\">3250 rpm<\/td><td data-start=\"6328\" data-end=\"6339\" data-col-size=\"sm\">2275 rpm<\/td><td data-start=\"6339\" data-end=\"6351\" data-col-size=\"sm\">2180 rpm<\/td><\/tr><tr data-start=\"6352\" data-end=\"6397\"><td data-start=\"6352\" data-end=\"6363\" data-col-size=\"sm\"><strong data-start=\"6354\" data-end=\"6362\">4.10<\/strong><\/td><td data-start=\"6363\" data-end=\"6374\" data-col-size=\"sm\">3570 rpm<\/td><td data-start=\"6374\" data-end=\"6385\" data-col-size=\"sm\">2500 rpm<\/td><td data-start=\"6385\" data-end=\"6397\" data-col-size=\"sm\">2390 rpm<\/td><\/tr><\/tbody><\/table><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5166233 elementor-widget elementor-widget-image\" data-id=\"5166233\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat-1024x576.jpg\" class=\"attachment-large size-large wp-image-83396\" alt=\"700R4\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat-1024x576.jpg 1024w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat-300x169.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat-768x432.jpg 768w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat-1536x864.jpg 1536w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/04-700r4-transmission-GM-automat.jpg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">700R4 Automatic Transmission<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a20ce01 elementor-widget elementor-widget-heading\" data-id=\"a20ce01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Swap Tips For Classics, Muscle Cars, and Hot Rods<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-331700b elementor-widget elementor-widget-text-editor\" data-id=\"331700b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"6533\" data-end=\"6711\"><p data-start=\"6535\" data-end=\"6711\"><strong data-start=\"6535\" data-end=\"6568\">Carb linkage geometry matters<\/strong> for 700R4\/200-4R TV cables (e.g., Holley, Edelbrock brackets\/TV geometry correctors). Wrong geometry = wrong line pressure at part-throttle.<\/p><\/li><li data-start=\"6712\" data-end=\"6814\"><p data-start=\"6714\" data-end=\"6814\"><strong data-start=\"6714\" data-end=\"6730\">Crossmember:<\/strong> be ready to slide or re-drill; many aftermarket crossmembers make this a bolt-in.<\/p><\/li><li data-start=\"6815\" data-end=\"6975\"><p data-start=\"6817\" data-end=\"6975\"><strong data-start=\"6817\" data-end=\"6832\">Driveshaft:<\/strong> measure after mockup; 700R4 often needs a shorter shaft vs TH350 short. Keep proper slip-yoke engagement (~\u00be\u20131&#8243; showing at ride height).<\/p><\/li><li data-start=\"6976\" data-end=\"7084\"><p data-start=\"6978\" data-end=\"7084\"><strong data-start=\"6978\" data-end=\"6992\">Converter:<\/strong> For ODs, pick a converter that matches cam\/stall and has lockup (and a control plan).<\/p><\/li><li data-start=\"7085\" data-end=\"7148\"><p data-start=\"7087\" data-end=\"7148\"><strong data-start=\"7087\" data-end=\"7109\">Speedometer drive:<\/strong> gears or VSS adapters may be needed.<\/p><\/li><li data-start=\"7149\" data-end=\"7434\"><p data-start=\"7151\" data-end=\"7175\"><strong data-start=\"7151\" data-end=\"7173\">Rear gear pairing:<\/strong><\/p><ul data-start=\"7178\" data-end=\"7434\"><li data-start=\"7178\" data-end=\"7249\"><p data-start=\"7180\" data-end=\"7249\">NA street with mild cam: 3.42\u20133.73 + 700R4\/200-4R is money.<\/p><\/li><li data-start=\"7252\" data-end=\"7332\"><p data-start=\"7254\" data-end=\"7332\">Big-block torque + no OD needs: TH400 with 3.31\u20133.55 keeps it happy.<\/p><\/li><li data-start=\"7335\" data-end=\"7434\"><p data-start=\"7337\" data-end=\"7434\">Light street\/strip small-block: TH350 with 3.55\u20133.73 if you don\u2019t care about highway rpm.<\/p><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b5cbf0 elementor-widget elementor-widget-image\" data-id=\"1b5cbf0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.google.com\/imgres?q=200R4&#038;imgurl=https%3A%2F%2Fgbodyforum.com%2Fattachments%2Fimg_1605-jpg.71265%2F&#038;imgrefurl=https%3A%2F%2Fgbodyforum.com%2Fthreads%2Fidentifying-a-200r4.64624%2F&#038;docid=J_W66TbVB6qtYM&#038;tbnid=Fo5jH_bbIHOiOM&#038;vet=12ahUKEwjq9NiB8dSQAxX4kmoFHaIPDNMQM3oECCAQAA..i&#038;w=3264&#038;h=2448&#038;hcb=2&#038;ved=2ahUKEwjq9NiB8dSQAxX4kmoFHaIPDNMQM3oECCAQAA\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-1024x768.jpg\" class=\"attachment-large size-large wp-image-83397\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-1024x768.jpg 1024w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-300x225.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-768x576.jpg 768w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-1536x1152.jpg 1536w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/200R4-2048x1536.jpg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">200R4 Automatic Transmission<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-391b595 elementor-widget elementor-widget-heading\" data-id=\"391b595\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Identifying \u201cGood\u201d Cores<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a682fb5 elementor-widget elementor-widget-text-editor\" data-id=\"a682fb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"7468\" data-end=\"7595\"><p data-start=\"7470\" data-end=\"7595\"><strong data-start=\"7470\" data-end=\"7480\">TH400:<\/strong> Look for clean case threads, minimal pump face scoring, and a correct big-yoke output for your driveshaft plans.<\/p><\/li><li data-start=\"7596\" data-end=\"7679\"><p data-start=\"7598\" data-end=\"7679\"><strong data-start=\"7598\" data-end=\"7608\">TH350:<\/strong> Avoid stripped cooler fittings and cracked bell ears; check endplay.<\/p><\/li><li data-start=\"7680\" data-end=\"7772\"><p data-start=\"7682\" data-end=\"7772\"><strong data-start=\"7682\" data-end=\"7692\">700R4:<\/strong> Prefer \u201985-up (30-spline input). \u201987-\u201990 cores are best of the cable era.<\/p><\/li><li data-start=\"7773\" data-end=\"7912\"><p data-start=\"7775\" data-end=\"7912\"><strong data-start=\"7775\" data-end=\"7786\">200-4R:<\/strong> Codes like BRF (Grand National\/T-Type) are strongest stock. Even non-BRF units can be built stout; just budget internals.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3438df5 elementor-widget elementor-widget-heading\" data-id=\"3438df5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Which One Should You Choose?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8041b42 elementor-widget elementor-widget-text-editor\" data-id=\"8041b42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"7950\" data-end=\"8010\"><p data-start=\"7952\" data-end=\"8010\">Max durability, big torque, no OD needed: TH400.<\/p><\/li><li data-start=\"8011\" data-end=\"8088\"><p data-start=\"8013\" data-end=\"8088\">Budget, compact, cruiser that doesn\u2019t live on interstates: TH350.<\/p><\/li><li data-start=\"8089\" data-end=\"8193\"><p data-start=\"8091\" data-end=\"8193\">Street car that needs highway legs and snappy launch: 700R4 (good parts + perfect TV setup).<\/p><\/li><li data-start=\"8194\" data-end=\"8316\"><p data-start=\"8196\" data-end=\"8316\">Classic swap where length matters and you want the tallest OD: 200-4R (especially handy with dual-pattern bell).<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e4278a elementor-widget elementor-widget-text-editor\" data-id=\"4e4278a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Each of these GM transmissions represents a distinct era and purpose in drivetrain evolution. The brute-force simplicity of the TH400 to the highway-friendly efficiency of the 200-4R and 700R4. The TH350 remains the everyman\u2019s gearbox: affordable, compact, and adaptable for countless street builds. The TH400 is the proven heavyweight champion, still the go-to for drag cars and torque monsters. The 700R4 brought GM into the overdrive age with deep gearing and modern road manners, while the 200-4R earned cult status for its compact design and dual bolt pattern versatility. Ultimately, the \u201cbest\u201d transmission depends on what you drive, how you drive, and what you expect from it. Pick the one that matches your combination\u2014not just for strength or nostalgia, but for how it transforms the feel and function of your classic GM ride.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6aab9fb elementor-widget elementor-widget-text-editor\" data-id=\"6aab9fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>If you need any parts to swap a transmission in your classic Chevrolet, or if you need help choosing the perfect transmission, give our friendly techs a call at (203) 235-1200 or hop on <a href=\"https:\/\/www.ss396.com\/\">SS396.com<\/a>!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Which Classic GM Transmission Is Best For Your Ride? TH350? M22?When it comes to classic GM drivetrains, few debates spark more garage talk than which transmission to go with: manual or automatic? If you&#8217;re in the latter group, you have a few choices. From the bulletproof TH400 that powered muscle-bound big blocks to the compact, [&hellip;]<\/p>\n","protected":false},"author":24,"featured_media":83408,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[216,741,743],"tags":[794,792,526],"class_list":["post-83388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article","category-resto-information","category-tips-info","tag-700r4","tag-th350","tag-th400"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured.jpg",1200,600,false],"thumbnail":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured-150x150.jpg",150,150,true],"medium":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured-300x150.jpg",300,150,true],"medium_large":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured-768x384.jpg",768,384,true],"large":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured-1024x512.jpg",800,400,true],"1536x1536":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured.jpg",1200,600,false],"2048x2048":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2025\/11\/Featured.jpg",1200,600,false]},"uagb_author_info":{"display_name":"Tim King","author_link":"https:\/\/www.ss396.com\/cars\/author\/tim-k\/"},"uagb_comment_info":0,"uagb_excerpt":"Which Classic GM Transmission Is Best For Your Ride? TH350? M22?When it comes to classic GM drivetrains, few debates spark more garage talk than which transmission to go with: manual or automatic? If you&#8217;re in the latter group, you have a few choices. From the bulletproof TH400 that powered muscle-bound big blocks to the compact,&hellip;","_links":{"self":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/83388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/comments?post=83388"}],"version-history":[{"count":16,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/83388\/revisions"}],"predecessor-version":[{"id":83411,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/83388\/revisions\/83411"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/media\/83408"}],"wp:attachment":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/media?parent=83388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/categories?post=83388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/tags?post=83388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}