1964–1972 Chevelle RPO Codes: A Complete Breakdown
If you’re restoring, decoding, or just plain geeking out over a 1964-1972 Chevrolet Chevelle, then you’re probably checking out the RPO (Regular Production Option) codes. These codes tell you exactly what factory options your car came with, everything from engine and transmission to trim level and special packages. RPO codes determine if your Chevelle was a plain-jane six-cylinder or a fire-breathing Super Sport. Below is a breakdown of the most relevant RPO codes used specifically on Chevelles from 1964 through 1972.
For a complete list of RPO Codes, check out our article RPO Codes and How To Read Them
Body & Trim Codes (A–E)
- A01 – Tinted Glass (all windows)
- A02 – Tinted Windshield Only
- A31 – Power Windows
- A33 – Power Tailgate Window (wagons)
- A41 / A46 – Power Seat Controls (4-way / driver only)
- A49 – Deluxe Seat Belts with Retractors
- A51 – Strato-Bucket Seats
- C05 / C06 – Convertible Top, Manual/Power (1964–65)
- C60 / C65 – Air Conditioning, Standard/Deluxe
- D55 – Center Console
Chassis & Suspension Codes (F–G)
- F40 – Heavy-Duty Sport Suspension
- G80 – Positraction Rear Axle
- G75 / G76 / G94 – Rear Axle Ratios (e.g., 3.70, 3.36, 3.31)
Brakes, Steering & Wheel Options (J–P)
- J50 – Power Brakes
- JL2 – Front Disc Brakes (1972+)
- P61 / P62 / P67 – Tire and Wheel Packages
Powertrain Codes (L-Series Engines)
- L14 – 307 CID V8
- L22 – 250 CID Inline-6
- L26 / L30 / L34 / L35 / L36 / L48 – Various Small- and Big-Block V8s (327 / 396 / 427)
- L65 / L48 (1970+) – 350 CID V8 Options
Transmission Codes (M-Series)
- M20 / M21 / M22 – 4-Speed Manual Transmissions
- M35 / M38 / M40 – Automatic Transmissions (Powerglide, Turbo 350, Turbo 400)
Special & Performance Packages (Z-Series)
- Z01 / Z02 / Z04 / Z13 – Comfort & Appearance Packages
- Z15 – SS Package (1971)
- Z25 – SS396/402 Special Equipment Package (1970)
Year Specific Notes
Most of the codes listed above were used across multiple years, but some are exclusive to certain model years:
- JL2 – Front Disc Brakes introduced in 1972
- Z25 – SS396/402 package available only in 1970
- Z15 – SS trim option used in 1971 (not tied to engine size)
Super Sport & High-Performance Highlights
- In 1970, the Z25 package included the 402 big block by default. The legendary LS6 454 could be added via a special COPO order.
- From 1966–69, the L34 and L36 big-blocks were commonly found in SS models.
- Some ultra-rare COPO Chevelles had L72 427 engines or aluminum-head L89 options.
Further Resources
For complete breakdowns by VIN, trim tag, and plant codes, we highly recommend checking out:
- ChevelleStuff.net – Extensive year-by-year RPO decoding and reference
- ChevelleInfo.com – Great for 1972-specific option listings
The RPO code system was GM’s way of customizing vehicles on the production line—and it gives modern enthusiasts a way to uncover a car’s original identity. Whether you’re verifying a rare SS build or restoring a base Malibu, these codes are your best guide.
If you’re needing parts to convert your Plain-Jane Chevelle into a Super Sport, hop on over to SS396.com or give our friendly techs a call at (203) 235-1200!
