The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. You have to decode these simple codes to read and understand the information. You don't have to search the classifieds or a junk pile to find a suitable bellhousing for your Muncie M20, M21, or M22. The fluid pan shape is irregular, being likened to distorted Texas state borders. There are a couple of different debates that typically occur when a bunch of car guys get together. The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. Transmissions have RPO numbers, usually beginning with "M". The T-85 three-speed transmission was one result of that merger. The Turbo 400 has a very distinct fluid pan. If you do happen to stumble across Chevy four-speed at a swap meet, do you know what you are actually looking at? Search transmissions by vehicle's VIN, License Plate, or Year/Make/Model information. The problem with checking the owners manual is that a junkyard find wouldnt have one. By 1963, the General had developed and worked with the Saginaw Corporation to develop a proprietary Chevy four-speed (based on components used in the Borg-Warner transmission). Generally able to handle up to 400 foot pounds of torque. +$20.00 shipping. Some GM brand models even have different transmission pan shapes and transmission types for different years. 2023 Power Automedia. In modern cars, you can quickly identify the 6-speed and 5-speed transmission applications. If you find an M22, you have the ultimate Muncie designed for the high torque of a big-block that will bolt to your small-block. The center two digits are the day of the month. 3925656 is the casting number for the saginaw used in 68-75 at least. The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. However, there are some methods you can apply to determine the transmission type your car uses. Many GM trannys had the VIN stamped on the maincase on the flange where it attaches to the tailshaft, but some of the later Saginaws had a pad machined into the case just for stamping the number. May 31, 2006. 1. In the early 90s, GM rebranded all of its transmissions. transmission identification confusion | Chevy Tri Five Forum The numbers 3831707 and the shifter linkage being attached with studs and nuts make this a side cover for an early Muncie. GM's goal with the Muncie four-speed was to produce a better shift employing larger synchro cones. Generally found in Chevy & GM trucks, cadilacs and large displacement engined, full size GM rear wheel drive cars.
