Due to the wide combination of id's, stampings, numbers, etc. Under his direction, the magazine was redesigned and re-juvenated, and became more authoritive and intelligent - reflecting his own professional attitude. The basic design and operation theory of the gearbox changed little during that time, though several design upgrades and modifications were made during the total production run. It is a later casting design with ers with bolt-on shifter shafts. The Muncie was initially a stronger various to the T-10 and Tremendous T-10 as a result of it might take the torque. Yet one more method to determine the Muncie is by way of stamped codes within the case, which point out when the transmission was constructed at Muncie see How To Learn Muncie Construct Date Codes chart.
Nevertheless, neither compares to the Muncie when it comes to power. Since this car was a Canadian shipped car, he also had the shipping records from Chevrolet of Canada. It is unique to the Muncie and was used until the very end of production in all main cases with the exception of the 3831704 case. The 3864848 case with the last 848 numbers milled off is in some full-size cars, such as the Impala. Take away the aspect cowl and forks for a take a look at the geartrain. With the guide pin in rear bearing retainer aligned retainer.
The evolution of case design also helps pinpoint the year a case was released. In addition, due to engine and transmission swaps, and modifications that occur over the years many cars do not carry the original drivetrain that they were produced with. . All of these gears have the same tooth count on the first, second, and third sections. I'm fairly sure it's not an M-22, as the input shaft has two ring grooves on mine, while the M-22 is supposed to have none.
One of these vehicles is where you are most likely to find a Muncie four-speed. The 1963 plate had more material surrounding the reverse idler bore. Another 10-spline versus 26 spline comparison Note thicker teeth on the M22 input shaft as well as the straighter cut gears. Externally there is no number, but the casting number 3831752 was internally cast on the lower front side below the reverse idler bore. He has numerous contacts and is well respected in the industry. At this time during my research, I realized that even though all of this documentation was great, I needed a legitimate car to verify that these transmissions had actually made it to a factory assembly line.
Little did I realize that at that time I had found the proof needed to validate the 1965 M22 transmission. The progression of the 10-spline input identification groove system. That is an M21 with 10-spline enter shaft and cast-iron bearing retainer. This frees up the geartrain. Email us at fourgeartrans aol. All 26 spline inputs came with 32 spline output shafts and all 10 spline inputs came with 27 spline output shafts.
There are six recognized Muncie aspect covers. On the left is the M20 countershaft and 10-spline enter shaft. That the Muncie has a lot in widespread with the T-10 is not any accident. The M-22 was generally installed behind severely powerful high torque big-block engines. Ratios of the M20, M21, M22 Muncie 4-speeds were produced in two different ratios wide-ratio M-20 and close-ratio M-21.
A, B, C, Last digit of assembly code. Here are some 26-spline input shafts. In the special instructions box under accessories, please note that this was a rush-competition car from day one. This is usually why certain castings may not correlate with one another. The T-10 four-speed was an evolution of the T-85 three-speed transmission, with each of those transmissions being fairly comparable in look. Install the main drive gear bearing retainer, gasket, transmission case.
Ratios Year Type Rings 1st 2nd 3rd 4th Rev 1963 - 1965 M20 None 2. Most of the time the other cloc is blank, but occasionally it represents numbers and deviations to the original blueprint. All documented M22 transmissions have the 3925660 main case. By referring to this sheet I could tell which transmissions were built and where they were sent. Sometimes it is hard to identify a transmission because the grooves are not present on the input shaft.