m22 rock crusher identifiion Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27spl. SALE. ALL NEW SUPER CASE MUNCIE M22W WIDE RATIO 4 SPEED TRANSMISSION. Yahoo Answers The Rock crusher was the M-22 Muncie close ratio 4 speed transmission favored in the '60's GM hot rods.Well balanced, smooth shifting and after

Description Part Number. Rebuilt Transmission 1966-1974 M21 27 Spline MTGM016. Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038 

Muncie M22 Gear Set 2.20 Ratio Rock Crusher 10 Spline Input Fits M20 M21 4 Speed · Item information · Related sponsored items · Description · Postage and payments.

muncie 4 speed rock crusher gear ratio. GM was phasing out the use of the Borg-Warner T-10 in 1963, and the Muncie 2.56:1 ratio becamestandard equipment for four-speed applications in the 1964 Chevelle, Nova and Olds F-85/Cutlass. The early Muncie units built between 1963-'65 had a 7/8-inch input shaft and are not the best transmissions to use

Muncie 4 Speed Hot Rod Forum. Aug 14, M-37 Super Muncie or rock crusher Several ratios available, large input shaft 1 14, like Hemi 4-speed and big Top Loader, spur-cut 1st gear increased load shock capability, makes a horrid whine , thus the nickname and large output shaft.

The M20 is a wide ratio with works better with 3.73 or numerically lower gears. The close ratio M21, and close ratio "rock crusher" M22 are better suited 

Muncie also had a second close-ratio transmission designated M22 and often referred to as the "rock-crusher," which was used behind the highest-performance engines and in Corvettes, the M22 is a highly sought-after performance transmission. It is the heavy-duty version of the 2.20:1 ratio M21 four-speed.

What transmission is the rock crusher? The 2.56:1 ratio is commonly referred to as the M20. Muncie also had a second close-ratio transmission designated M22 and often referred to as the “rock-crusher,” which was used behind the highest-performance engines and in Corvettes, the M22 is a highly sought-after performance transmission.

The guys at Anaheim Gear tell us there are seven total Muncie input shaft options. Shown here is the M20 10-spline wide-ratio input shaft and counter gear. There is also a fine-tooth 26-spline input shaft employed from 1971-'74. 5. If you examine the 1966-'70 wide-ratio M20 input shaft, there are two grooves cut amid the 10 splines.

New Muncie M22 2.20 close ratio or 2.52 wide ratio Rockcrusher gear set is availabe with either a 10 or 26 spline input. Close ratio 26 spline gear sets available in Italian or Korean made. You must select whether you need a wide or close ratio & which input spline count, 10 or 26. Fits all Muncie applications with 1" countershaft pin, 1966-74.

In the beginning, the M-22 was the Heavy Duty Muncie, and it was available ONLY in the close ratio version (2.20:1 first gear ratio). The primary difference between the regular close ratio Muncie (M-21) and the HD Muncie was the angle at which the gear teeth were cut.