4 speed muncie - M20, M21, M22
Muncie M22w wide ratio 26/27 heavy duty gears and steel mid plate in a factory M22 main case.
ALL NEW SUPER CASE MUNCIE M22W WIDE RATIO 4 SPEED TRANSMISSION. One of the Best Strongest direct replacement 4-speed transmissions.
NEW GM M22
Super Duty Pro Road Race M22, M22X, M22W, Read Description Below
All New and Strongest Heavy Duty Muncie Auto Gear Super Case M22 4-speed Close Ratio or Wide ratio 26 spline input and large 32 spline output shaft.