{"id":57023,"date":"2022-05-02T08:19:00","date_gmt":"2022-05-02T12:19:00","guid":{"rendered":"https:\/\/www.ss396.com\/cars\/?p=57023"},"modified":"2024-06-14T09:22:46","modified_gmt":"2024-06-14T13:22:46","slug":"history-of-the-th400-transmission","status":"publish","type":"post","link":"https:\/\/www.ss396.com\/cars\/history-of-the-th400-transmission\/","title":{"rendered":"History Of The TH400 Transmission"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"57023\" class=\"elementor elementor-57023\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8c3cfc3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8c3cfc3\" 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-fcc3a2c\" data-id=\"fcc3a2c\" 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-b672d98 elementor-widget elementor-widget-heading\" data-id=\"b672d98\" 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\">TH400 History, Facts, and Figures<\/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-a239f7d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a239f7d\" 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-0964583\" data-id=\"0964583\" 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-306b353 elementor-widget elementor-widget-text-editor\" data-id=\"306b353\" 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>The Turbo 400 Transmission, or TH400 Transmission debuted in General Motors cars in 1964. The first year it was used in Cadillacs and Pontiacs, but found it&#8217;s way into Chevrolet&#8217;s and the like by 1965. TH400&#8217;s from 1965-1967 also featured a variable pitch stator which helped the torque converters characters and can be seen by the two-prong plug on the case.\u00a0<\/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-9436ae5 elementor-widget elementor-widget-image\" data-id=\"9436ae5\" 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 fetchpriority=\"high\" decoding=\"async\" width=\"400\" height=\"285\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/40200-400-0.jpg\" class=\"attachment-large size-large wp-image-57189\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/40200-400-0.jpg 400w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/40200-400-0-300x214.jpg 300w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/>\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-70c070a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"70c070a\" 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-a5d7ac8\" data-id=\"a5d7ac8\" 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-123e5b8 elementor-widget elementor-widget-text-editor\" data-id=\"123e5b8\" 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>By the 1970&#8217;s the TH400 found a home in heavy duty GM trucks in both 2WD and 4WD versions. The name also changed from TH400 to 3L80 in 1990. The name 3L80 comes from 3-speeds, longtiudinally positioned, and 8,000lbs Gross Vehicle Weight. The name change was to help identify the transmissions better. The early 1990&#8217;s is also when we see the introduction of the 4L80-E, which is the successor of the TH400 that has overdrive.\u00a0<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ecef10b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ecef10b\" 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-19195dc\" data-id=\"19195dc\" 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-86a768e elementor-widget elementor-widget-text-editor\" data-id=\"86a768e\" 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>The TH400 transmission is the heavy-duty version of a TH350. The TH400 was electronically controlled, which required a kickdown switch by the carb or gas pedal to tell the transmission when to kick down a gear. They are still being produced and used in heavy duty GM and military vehicles. Here&#8217;s a list from <a href=\"https:\/\/gearstar.com\/overview-gm-th400-transmission\/#:~:text=History%20of%20the%20TH400%20Transmission,just%20exclusive%20to%20GM%20cars.\" target=\"_blank\" rel=\"noopener\">Gearstar.com<\/a> of all the cars that used the TH400 transmission:<\/p><ul><li>1965-1967, 327 V8 (Rambler\/AMC)<\/li><li>1968-1971, 350 V8 (Buick)<\/li><li>1969-1972, 225 V6 (Buick)<\/li><li>1972-1975, 232 I6 (AMC)<\/li><li>1975-1979, 258 I6 (AMC)<\/li><li>1972-1979, 304 V8 (AMC)<\/li><li>1972-1979, 360 V8 (AMC)<\/li><li>1974-1975, 401 V8 (AMC)<\/li><li>GM<\/li><li>Jaguar<\/li><li>Ferrari<\/li><li>Rolls-Royce<\/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-f838375 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f838375\" 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-311b10e\" data-id=\"311b10e\" 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-ab39e6c elementor-widget elementor-widget-heading\" data-id=\"ab39e6c\" 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\">Common Features Of TH400 Transmission<\/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-2a11796 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2a11796\" 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-12d7192\" data-id=\"12d7192\" 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-89c4536 elementor-widget elementor-widget-text-editor\" data-id=\"89c4536\" 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>A durable transmission, the TH400 provided improved performance over its predecessors. Any TH400 will have these common features:<\/p><ul><li>Aluminum and iron construction.<\/li><li>Weighs 135 pounds without fluid.<\/li><li>Bell housing integrated into the transmission.<\/li><li>First gear: 2.48:1, Reverse gear: 2.08:1, and third gear is an even 1 to 1.<\/li><li>Came with three tail shaft lengths.<\/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-d165543 elementor-widget elementor-widget-image\" data-id=\"d165543\" 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=\"531\" height=\"355\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/71faT7P0JEL._AC_SY355_.jpg\" class=\"attachment-large size-large wp-image-57188\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/71faT7P0JEL._AC_SY355_.jpg 531w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/71faT7P0JEL._AC_SY355_-300x201.jpg 300w\" sizes=\"(max-width: 531px) 100vw, 531px\" \/>\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-34b95f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"34b95f5\" 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-2cb92d2\" data-id=\"2cb92d2\" 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-8678e13 elementor-widget elementor-widget-heading\" data-id=\"8678e13\" 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 a Turbo 400 Transmission<\/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-a040721 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a040721\" 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-bdecfd3\" data-id=\"bdecfd3\" 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-6190fef elementor-widget elementor-widget-text-editor\" data-id=\"6190fef\" 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&#8217;re at a junkyard looking for a TH400 transmission, here are some things that will help you identify one.\u00a0<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f3924a5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f3924a5\" 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-f7e6cac\" data-id=\"f7e6cac\" 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-e7512fc elementor-widget elementor-widget-heading\" data-id=\"e7512fc\" 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\">1. Visual Clues<\/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-2fc8da3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2fc8da3\" 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-fa6db37\" data-id=\"fa6db37\" 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-787f355 elementor-widget elementor-widget-text-editor\" data-id=\"787f355\" 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>TH400&#8217;s are made out of aluminum and the case itself is smooth, meaning no ribs on the outside like a T56. The overall length is 24-3\/8&#8243; long which is about the longest automatic GM makes but it&#8217;s still a small design.\u00a0<\/p><p>Other clues are a hex bolt pattern on the rear mounting face of the trans and the ribs run forward longitudinally. The transmission pan is also an irregular shape. There are also car pans and truck pans; the truck pans are deeper.\u00a0<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e27ea6b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e27ea6b\" 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-570da44\" data-id=\"570da44\" 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-56c3ddc elementor-widget elementor-widget-heading\" data-id=\"56c3ddc\" 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\">2. TH400 Variants<\/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-2464304 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2464304\" 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-95fdebc\" data-id=\"95fdebc\" 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-20f8532 elementor-widget elementor-widget-text-editor\" data-id=\"20f8532\" 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>TH375 and TH475 are the two variants of the TH400. The TH375 would have been used in lighter and smaller displacement cars from 1972-1976. The TH475 was an extra heavy-duty version that was used in larger trucks starting in 1971. The TH375 will have a &#8220;375-THM&#8221; cast into the bottom of the tail housing.\u00a0<\/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-2ddd021 elementor-widget elementor-widget-heading\" data-id=\"2ddd021\" 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\">3. TH350 VS TH400<\/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-6cfd484 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6cfd484\" 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-9567f5a\" data-id=\"9567f5a\" 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-5293e75 elementor-widget elementor-widget-text-editor\" data-id=\"5293e75\" 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>The easiest way to differentiate between a TH350 and TH400 transmission is the kick-down mechanism. For a TH350 these will have a mechanical cable kick-down that is connected to the throttle linkage. The TH400 has the electric switch that we mentioned earlier.\u00a0<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a8a670d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a8a670d\" 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-69a3ed2\" data-id=\"69a3ed2\" 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-a8c11ed elementor-widget elementor-widget-heading\" data-id=\"a8c11ed\" 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\">TH400 Transfer Case<\/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-76db8f6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"76db8f6\" 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-21a15bf\" data-id=\"21a15bf\" 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-71a7a44 elementor-widget elementor-widget-text-editor\" data-id=\"71a7a44\" 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>Since the TH400 can be easily adapted, it&#8217;s popular to transfer into most Jeeps longer than CJ5&#8217;s. Both the 2wd and 4wd versions of the TH400 can be utilized. The 1976-1979 AMC case is similar to the TH400, from the collar of the case and back but it&#8217;s tilted roughly four degrees.\u00a0<\/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-86ba583 elementor-widget elementor-widget-image\" data-id=\"86ba583\" 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=\"600\" height=\"433\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Sa186-full-book_Page_018_Image_0002.jpg\" class=\"attachment-large size-large wp-image-57191\" alt=\"\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Sa186-full-book_Page_018_Image_0002.jpg 600w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Sa186-full-book_Page_018_Image_0002-300x217.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\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-0581de4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0581de4\" 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-0490dd9\" data-id=\"0490dd9\" 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-2a86765 elementor-widget elementor-widget-heading\" data-id=\"2a86765\" 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\">Adapting a TH400 To Your Engine<\/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-fc0095a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fc0095a\" 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-17f9a58\" data-id=\"17f9a58\" 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-9e4542e elementor-widget elementor-widget-heading\" data-id=\"9e4542e\" 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\">1. Chevrolet<\/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-7b56c5e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b56c5e\" 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-e74aea0\" data-id=\"e74aea0\" 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-f3d0b0d elementor-widget elementor-widget-text-editor\" data-id=\"f3d0b0d\" 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>The front face of the TH400 is compatible with the Chevy 90 degree \u201cSmall Block\u201d or the \u201cBig Block\u201d patterned engines. This also includes the modern LS engine.\u00a0<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58f2e29 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58f2e29\" 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-f1fac8b\" data-id=\"f1fac8b\" 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-6f13ff8 elementor-widget elementor-widget-heading\" data-id=\"6f13ff8\" 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\">2. AMC\/Mopar Jeep<\/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-a4f41c7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a4f41c7\" 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-de4f282\" data-id=\"de4f282\" 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-d89beb4 elementor-widget elementor-widget-text-editor\" data-id=\"d89beb4\" 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>The earliest Turbo 400s in Jeeps featured a factory adapter plate, whereas older AMC versions came with a dedicated AMC style case. It is entirely possible to make the Chevy 400\u00a0 compatible in the AMC I6 &amp; V8 engines. As an upgrade of this nature can result in a more enhanced Jeep powertrain over 727, 999.<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fdbb7df elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fdbb7df\" 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-9883b37\" data-id=\"9883b37\" 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-e02d8d0 elementor-widget elementor-widget-heading\" data-id=\"e02d8d0\" 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\">3. Oldsmobile\/Pontiac\/Buick\/Cadillac<\/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-466f727 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"466f727\" 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-e193528\" data-id=\"e193528\" 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-cf231ad elementor-widget elementor-widget-text-editor\" data-id=\"cf231ad\" 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>The TH400 is compatible in Buick engines especially when you use a Buick V8 or V6 version of the transmission.<\/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-0108ab6 elementor-widget elementor-widget-image\" data-id=\"0108ab6\" 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 loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600-1024x576.jpg\" class=\"attachment-large size-large wp-image-57192\" alt=\"TH400\" srcset=\"https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600-1024x576.jpg 1024w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600-300x169.jpg 300w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600-768x432.jpg 768w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600-1536x864.jpg 1536w, https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/s-l1600.jpg 1600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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-309aa63 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"309aa63\" 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-d15ec85\" data-id=\"d15ec85\" 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-f33e182 elementor-widget elementor-widget-heading\" data-id=\"f33e182\" 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\">Common Issues With TH400 Transmissions<\/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-71bb52a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"71bb52a\" 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-7322c3e\" data-id=\"7322c3e\" 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-5fb216b elementor-widget elementor-widget-text-editor\" data-id=\"5fb216b\" 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>The TH400 may have offered improved performance over its predecessor, the ST300, but it still came with its own problems. Notable among this is an early shift and less efficiency when the engine revs high. The latter occurs when the kick-down switch, responsible for shifting between gears and maintaining maximum RPMs, stops working. The switch would\u2019ve helped in, efficient power usage.<\/p><p>On the other hand, the cause of this problem can be tied to the wrong placement of the vacuum hard-line, moving from the intake manifold with a pliable rubber line. The heat generated by the engine and transmission leads to the deformity of the rubber, thereby failing to hold the pressure properly. Another problem of the TH400 is the possibility for its transmission fluid to leak gradually into the hose if the seal is not fixed properly.<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ac4431c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ac4431c\" 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-392c81e\" data-id=\"392c81e\" 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-ce22bcb elementor-widget elementor-widget-heading\" data-id=\"ce22bcb\" 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\">TH400 Parts <\/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-1be3d3d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1be3d3d\" 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-85f74ea\" data-id=\"85f74ea\" 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-00b7313 elementor-widget elementor-widget-text-editor\" data-id=\"00b7313\" 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 for your TH400 transmission, hop on over to <a href=\"https:\/\/www.ss396.com\/mm5\/merchant.mvc?Screen=SEARCH&amp;model=chevelle&amp;year=0&amp;q=TH400\">SS396.com for our line of parts<\/a>. You can also reach our friendly techs at (203) 235-1200 if you have any other questions!\u00a0<\/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>TH400 History, Facts, and Figures The Turbo 400 Transmission, or TH400 Transmission debuted in General Motors cars in 1964. The first year it was used in Cadillacs and Pontiacs, but found it&#8217;s way into Chevrolet&#8217;s and the like by 1965. TH400&#8217;s from 1965-1967 also featured a variable pitch stator which helped the torque converters characters [&hellip;]<\/p>\n","protected":false},"author":24,"featured_media":57196,"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":[216,736,734,743],"tags":[526],"class_list":["post-57023","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article","category-drivetrain","category-tech","category-tips-info","tag-th400"],"acf":[],"uagb_featured_image_src":{"full":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3.jpg",1080,607,false],"thumbnail":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3-150x150.jpg",150,150,true],"medium":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3-300x169.jpg",300,169,true],"medium_large":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3-768x432.jpg",768,432,true],"large":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3-1024x576.jpg",800,450,true],"1536x1536":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3.jpg",1080,607,false],"2048x2048":["https:\/\/www.ss396.com\/cars\/wp-content\/uploads\/2022\/04\/Featured-3.jpg",1080,607,false]},"uagb_author_info":{"display_name":"Tim King","author_link":"https:\/\/www.ss396.com\/cars\/author\/tim-k\/"},"uagb_comment_info":0,"uagb_excerpt":"TH400 History, Facts, and Figures The Turbo 400 Transmission, or TH400 Transmission debuted in General Motors cars in 1964. The first year it was used in Cadillacs and Pontiacs, but found it&#8217;s way into Chevrolet&#8217;s and the like by 1965. TH400&#8217;s from 1965-1967 also featured a variable pitch stator which helped the torque converters characters&hellip;","_links":{"self":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/57023"}],"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=57023"}],"version-history":[{"count":32,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/57023\/revisions"}],"predecessor-version":[{"id":82672,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/posts\/57023\/revisions\/82672"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/media\/57196"}],"wp:attachment":[{"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/media?parent=57023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/categories?post=57023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ss396.com\/cars\/wp-json\/wp\/v2\/tags?post=57023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}