How do I identify my Muncie m21?
Another way to confirm that the transmission is original to your car is most Muncie four-speed transmissions will have a Vehicle Identification Number (VIN) number stamped on the main case. The engine and transmission were stamped at the same time by the final assembly plant.
How big is a 6L80?
GM Transmission Dimensions
| A | B | |
|---|---|---|
| 6L80 Slip Yoke | 6.74 | 16.468 |
| 6L80 4WD | 6.74 | 16.468 |
| 6L90 2WD | 6.74 | 17.84 |
| 6L90 4WD | 6.74 | 17.84 |
How wide is a 4L80E transmission?
4L80E, 4L85E (1991 and Later)
| Style | A | E |
|---|---|---|
| Standard 2WD | 32 11/16 in. | 20 in. |
| HD 2WD | 31 15/16 in. | 20 in. |
| HD Long | 33 in. | 20 in. |
| 4×4 | 29 in. | 20 in. |
What is the shortest GM transmission?
The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep.
How do you tell the difference between a M21 or M22 transmission?
The M20 and M21 transmissions produced from 1963-’74 are easy to identify in both wide- and close-ratio units. The M22 to come later in 1967-’74 is also a close-ratio unit, but much stronger than the M21, with a higher torque capacity.
How can you tell the difference between M22 and M21?
How much HP can a stock 4L80E take?
How much power can the 4L80E handle? A totally stock unit or rebuild will typically live well with up to 450 flywheel HP/TQ.
How much HP can a 6l90e handle?
700 horsepower
The 6L90 transmission is not a terrible transmission. In fact, it is a high-performance component capable of handling up to 700 horsepower.
What is the ratio of the Muncie M21 transmission?
The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM’s production codes. The 2.56:1 ratio is referred to as the M20.
What is a Muncie M22?
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. 1. The classic Muncie four-speed transmission in all its many forms generally looks like this (this one provided by Anaheim Gear), though applications will vary in appearance.
When did the Muncie M20 come out with a 26 spline input?
The 26-spline input shaft came into production later in the 1970s for the M20 and M21. What you will find in your search for the right Muncie four-speed is conflicting information from different sources. Before you here are the basics of Muncie M20, M21, and M22 four-speed transmissions.
How do I know if my Muncie is an M20?
the rear-bearing bore. As mentioned previously, we know that the Muncie came with several ratios. Because main cases are often swapped rather than being repaired, the best way to determine if you have an M20, M21, or M22 is to simply look at the gears.