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. He had been rebuilding four-speeds, as a hobby, since as early as 1990. The most common main case casting was 3885010. Some Muncies also carry ratio I. This gave it a thicker tooth profile.
I have an M-22 confirmed when rebuilt and a Saginaw and like them both. The easiest way to identify a Muncie transmission is by its side cover. The lower set of holes are for Powerglide and 4-speed transmissions, the upper set of holes are for 3-speed transmissions. Hope someone can help me, thanks. There seems to be no specific time when this change took place.
Next to it on the left is a synchro hub. Having just done the shopping myself, I would lean towards the Borg warner. This was the first year that the T10 was used in the Ford Galaxie and Fairlane. Select a rear bearing retainer snap ring that reduces clearance between the snap ring and the rear-bearing face to a maximum of. I wanted a 4- speed!! From 1966 on, the customer could decide the transmission selection.
I pulled the bellhousing and flywheel from the donor car. Additionally, the optional 455 4-barrel V-8 was available only with the M-40 Turbo 400 automatic. Place the keys in position and, holding them in place, slide the hub into the sleeve. The synthetics leak out of them more easily than natural gear lubes. The third digit represents the month.
Use a new O-ring to ensure proper sealing. There are three basic types of Muncies: M20, M21 and M22. The only hole required is the one for the shifter. The other reason is that the cast of characters is constantly changing, especially in the Hurst shifter rebuilding world. With the leverage and the gears combined with a lever action, you increase the power an engine makes. Some of the best guys only do a few each year or are not consistently available.
Other necessary parts that were purchased for the swap are as follows See photo 5. The passenger-side speedometer extension housing also has added material between the upper shifter mounting holes. Lower the car from jack stands and ramps. I lived with that for a few years and then bought a Doug Nash 5 speed, Richmond gear bought their line out, so it's the same transmission you are considering. A lot of people call him looking for a correct transmission.
I believe in production Muncie driveshafts did differ based on application. I called around and visited several parts stores and all had the same part, all too large. I'm sure there are some very minor differences in lengths, over the years and models, but 25 and 27 inches are the norm, including the bellhousing. Though rare, they can be found from used parts vendors, eBay, racingjunk. 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.
Or the one in the truck. These assemblies came with heavier strut key springs. All my other parts are correct to a 1963 Impala auto console shift. Many failed in the line of duty and were replaced under warranty or were swapped out later. There was no 454 drive line available. It had been over 20 years since I owned my last Impala, when a good friend finally talked me into searching for one.