The center gear is from a BorgWarner T85 3-speed. It had a thrust washer behind first gear that floated on the rear bearing inner race. Muncie Four Speed casting numbers identify all aluminum Muncie main cases: 3831704 - 1963 only 3851325 - 1964-'65 3885010 - 1965-'67 3925660 - 1968-'70 3925661 - 1971-'74 The 2. The transmission was assembled December 13, 1967 for the 1968 model year. It was obviously a move to save money and consolidate inventory since all transmissions would be assembled internally using all the same parts.
Fitment issues might arise when installing one of these transmissions in a pre1971 car. Only about 50 early units were made. They take on a duller chrome appearance, similar to something they'd use in the manufacturing of chrome. This is generally caused by pilot bearing failure that generally damages the input shaft. The first symbol indicates division, the second matches the last digit of he model year and the third tells what assembly plant the car was built in. See the complete line of products that we offer at.
Start the ex- bearing fully seats against shoulder on gear. Spread 3'- the snap ring in the plate to allow the snap ring to F5 drOp around the rear bearing and press on the end :3? Next to it is a regular and less expensive brass synchronizer ring. Note: The ratio designation letter didn't appear until around October 1, 1968 for the 1969 model year so any Muncie in a 1969 Chevelle dated August M or September P would probably not have the A, B, or C designation. The easiest way to identify a Muncie transmission is by its side cover. The change basically states that a new gearset is to be used with different synchronizer assemblies, the main case is to be modified to accept a drain plug, and the countershaft bore of the case is to be machined to accept a 1-inch-diameter counter-shaft.
West can take a '65 case and put in later model stuff. The first-speed gear had a smaller bore diameter as well as a recess in the bore to clear the synchronizer retaining snap ring. Some people put the case in a vibratory finisher that gives it a different look. Later model 1971-'74 Muncies are also popular with racers, because these transmissions used a 32-spline output that is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications. Assembly Instruction Manual with the date stated on the A. The Muncie was used with most performance engines and is not to be confused with the Saginaw or Borg-Warner 4-speeds. Install the main drive gear bearing retainer, gasket, transmission case.
It is unclear why there is the discrepancy. This larger diameter was necessary because the big-block and small-block engines were producing more power. Although all previously published data has denied or excluded the existence of the 1965 M22 transmission, this author has uncovered the trail behind this mystical transmission. The M22 has higher-nickel-content straight-cut gears. Another misconception is if you have a drain plug you have a M22.
We have the best prices on Muncie 4 speed parts, including Chevy Muncie 4 speed transmission parts, and we can guarantee you a great selection of items extending from the or bushing to a complete replacement wide ratio or. First was to revamp the T10 to handle more power. Serial numbers from 1969 on were appended with a ratio designator. The first-speed gear rode directly on the mainshaft. Please note that this car was to be delivered June 17. There is a dowel pin in the cover 2.
This sheet lists by model year, each M22 assembly shipped from Muncie with accumulative totals across the bottom of the page. . BorgWarner sold the T10 to Doug Nash in the early 1980s, which then sold it to Richmond Gear. So exactly what is an M22? The Muncie was used with most performance engines, and is not to be confused with the Saginaw or Borg Warner 4-speeds. This information was only useful to the Muncie plant by allowing the tracking of problem parts. Always check to see that the date marked precedes the final assembly stamp code.
Muncie shifter shafts have evolved in three basic stages. The 9-digit code will tell you which division, year, model, assembly plant, and car the transmission was pulled from. The last six digits should match the last six digits of your V. The speedometer fitting is located right where the linkage is. The Muncie was never designed for that.
It was held in place with a spring-steel clip. The transmission designation is now M22, designating that this car was final assembled with the aforementioned transmission. The output shaft was increased from 27 splines to 32. It's a matter of whose perception because the factory main case was kind of shiny silver. He has vision, dedication and follows through on his commitments. The primary feature which seems odd is that the casting number on the main transmission case has been routered off.