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

Yesterday, the finest synchronizer rings for your 'Muncie' four-speed were made in Wuhan, China. (2) uses the legendary M22 'Rock Crusher' gear geometry

Close ratio. Rock Crusher. This gear Set has all 3 speed gears, 1st, 2nd, & 3rd, the cluster, input and the reverse idler gear. Available in Close ratio, 10 spline Coarse or 26 splined fine. Muncie M22 Gear Set 2.20 Ratio Rock Crusher 10 Spline Input Fits M20 M21 4 Speed. $569.98. Free shipping Free shipping Free shipping.

Jun 09,  · By the time the Muncie was in its final phase of production (1971-1974) it also gained a 32 spline output shaft in place of the original 27 spline unit. Wide, Close, or Rock Crusher Initially there were two specific Muncie transmissions available: the M20 wide-ratio (2.56:1 first gear) and the M21 close-ratio (2.20:1 first gear).

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.

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.

23 rows · Jan 25, 2022 · M21 Close-Ratio: First Gear: 2.20:1: Second Gear: 1.64:1: Third Gear: 1.28:1: Fourth Gear:

M20 first, 2.56:1; second, 1.91:1; third, 1.48:1; fourth, 1.0:1; and reverse, 2.64:1. These are three first-speed Muncie gears. The far left gear is a 1963.

Chevy GM Muncie M22 Rock Crusher Wide Ratio 4 Speed. Car & Truck Parts & Accessories. >. Transmission & Drivetrain. >. Manual Transmission. Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. We have rebuild kits in stock and ready for shipment.

This a BRAND NEW SUPERCASE M22 Muncie Rockcrusher Style Transmission. This is a BEEFY version of the original Rock Crusher transmission. Most all the weak points of an original Muncie have been solved by the Super-Case design. The Supercase has extra casting in all the known weak areas. The mid plate is aircraft grade aluminum.

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.

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Hot sale muncie m22 rock crusher ultra show car quality transmission with mirror polish finish muncie m22 aluminum rock crusher transmission fits m20 and m21 

I replace an purchased M22 gearset with an Autogear M22Z set. Comparisons of builds and gear ratios explained. I have some dissassembly highlights in t

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.

The Muncie 2.56 to 1 ratio gearbox became the commonly used unit for four-speed applications beginning with the 1964 Chevelles and Novas. It was also used in non-Chevys, in the Pontiac Tempest and Oldsmobile F-85/Cutlass models. The easiest way to identify a Muncie transmission is by its side cover. Muncies have seven bolts, two bolts on the

Muncie four speeds Hemmings GM was phasing out the use of the Borg-Warner T-10 in 1963, and theMuncie 2.56:1ratio became standard equipment for four-speed applications in the 1964 Chevelle, Nova and Olds F-85/Cutlass.

Input- 26 Tooth 26 Spline Close Ratio Counter Shaft- R27-22-19-17 Big 1" Pin Close Ratio 1st Gear- 36 Tooth 2nd Gear- 30 Tooth 3rd Gear- 27 Tooth Rev Idler- M21 

Close ratio. Rock Crusher. This gear Set has all 3 speed gears, 1st, 2nd, & 3rd, the cluster, input and the reverse idler gear. Available in Close ratio, 10 spline Coarse or 26 splined fine. Muncie M22 Gear Set 2.20 Ratio Rock Crusher 10 Spline Input Fits M20 M21 4 Speed. $569.98. Free shipping Free shipping Free shipping.

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 m22 rockcrusher close ratio,2.20 first gear also have wide ratio m22 10 or 26 spline input 27 out.rebuilt with new gearset tork locking sliders (helps 

Muncie Transmission ID and Ratio Guide. Series: Gear Ratio 1st, 2nd, 3rd, 4th: Spline Input: Grooves Input: Cluster Pin : Tooth Count Input: Tooth Count 4th Cluster: Output Spline: M-20 wide ratio 63-65 M-20 wide ratio 66-70 . M-20 wide ratio 71-74 . M-21 close ratio 63-65 .

The new Muncies being built today have some better ratios. Today's examples of the new car gear set ups are Mustang GT's with a 3.35 1st gear and 3.08 rear. 

The transmission shift. MUNCIE M-20/M-21 EARLY, G.M. (451) 7 bolt side cover used from 1963-68 * MUNCIE Shaft Identification The above Muncie 4 speed transmissions can be distinguished from the style of the transmission arm attachment. Pre '69 Muncie's use a stud & nut at the indicated attachement point, while '69 and later Muncie's use.

Special “Z” ratio (2.98-1st, 2.04-2nd,1.46-3rd, 1:1-4th) Perfect for your 2.73 to 3.42 gears. Excellent performance in 1st gear and low RPM on the highway.

NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO 4 SPEED THIS IS THE M-22 TRANSMISSION THAT GM COULD NOT BUILD! Newly designed STATE-OF-THE-ART Muncie front case from "Auto Gear". This is by far the "BEST" replacement aluminum case ever built for a