Muncie M Rock Crusher Break Down

How to Identify a Muncie Four Speed: Build Date Codes

1963-1966 production codes will start with the letter P and have four numbers, for example: P0421. 1. P represents the manufacturing plant, Muncie.

When was the M22 first called "rock crusher"?

I have a suspicion that rock crusher may have first been used in a late-1960s auto magazine test drive, but was hoping the historians in this group might be able to narrow it down. Thanks! Save Share. Like. ... 68-9, 70-74) ALLLLLLLLLLLL Muncie cases had the SAME casting number, REGARDLESS if it was an M20 or an M21 or an M22. The casting ...

GENERAL MOTORS MUNCIE 4-SPEED MANUAL …

MUNCIE 4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS 1963-1974 GENERAL MOTORS (HIGH PERFORMANCE) ... L26-s36T: M22 'Rock Crusher' (1971-74) 3978761 WT297-16Z NOTE: these (3) gears used with 26 spline clutch. B2-2 Maindrive Oil Slinger all 3925692 3925762

How strong is a muncie | Chevy Tri Five Forum

that 572 is going to crack that muncie like an egg. i hear stock muncie rock crushers are rated at 375 foot lbs...which is like a nice 350 without aluminum heads. big torque requires an expensive clutch and standard transmission. a turbo 400 is a safer bet...all i know is that torque breaks stuff and torquey shock loads break stuff quicker.

How much power can a Muncie 4 speed handle | Team …

I've run 11.55 @118.85 in a 3350# 64 Chevelle with a2.52 first gear M-20, 4.88 rear w/ spool, 28 X9 Goodyear slicks and have only broken it 3 times in 3 years. The key is the Clutch. Run a Hyatt/ Ram slipper. Tim will set you up with a system that will save parts.

GENERAL MOTORS MUNCIE 4-SPEED MANUAL …

GENERAL MOTORS "MUNCIE" FOUR SPEED 10-1-01 10 C8 Idler Gear (Front) L18-s27T: except M22 3831762 WT297-10 L18-s27T: M22 'Rock Crusher' 3879997 WT297-10B C9 …

Muncie I.D. chart | Chevy Tri Five Forum

The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. ... bearing broken in half.replaced but can,t get trans to go in gear .shift linkage looks okay. pushed clutch pedal down about 1 inch ...

Brand New SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission

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.

How to Identify a M22 Rock Crusher | It Still Runs

An M-22 "Rock Crusher" is a Muncie four-speed transmission for cars made by General Motors in the 1960s. Identify a transmission type correctly before fitting it into your car. If you have the incorrect transmission, your car may not …

Muncie m22 max torque / horsepower | Team Camaro Tech

zero rock slider/hubs (use torque lock slider only with gearsets with torque lock synchros like korean gearsets) gear drive made from steel; muncie super case OR N24 Ultracase with ribs (even better) alloy midplate OR iron midplate (even better) alloy side cover; heavy duty tailshaft; etc etc.. just check out his shop

Muncie "rock crusher" vs. TKO 600

Muncie "rock crusher" vs. TKO 600 The naysayers are saying "nay", again!! ... but it took the factory putting alittle over 1000 ft. lbs of torque to it to make it break. Along with the overdrive I feel that this makes the Tremec far superior to the Muncie. I personally sell about 20 of these units a month, many taking the place of the old M22 ...

1969

1969 - 1973 Muncie Four Speed Transmission M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1969 - 1973 model Chevelles and Novas. This one will have the holes on the side where a bolt will secure your shifter linkage levers. This is the Muncie M-22 Rockcrusher four speed.

Muncie M22Z on the way (UPDATE: switched to the M23Z)

They do have a break in procedure. Don't let it idle in neutral with the clutch engaged . This lets the input shaft spin but nothing else and doesnt let the oil circulate. ... Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SPRING SALE!!! - Muncie 4 Speed Transmissions And Rebuild Kits

Muncie Parts

NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. Must specify if your transmission has a 1" or 7/8" cluster shaft (pin) 7/8" kit comes with NON stepped synchronizer rings. Please scroll down to order extras (cluster pin, wrench,sliders etc) From $144.30

How To Build a Bulletproof Muncie M-22 Four …

The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive. Cam Benty Writer John McGann Photographer Nov 04, 2022

How to break a muncie M22 rockcrusher...

Check out autogear. They sell a completely new M-22 that is much stronger than an original, and 10 times stronger than a new T-10 for around $1800. They have stronger main …

Muncie M-22 Rock Crusher | Chevrolet Nova Forum

People think the "Rock Crusher" is special or stronger than a standard wide box Muncie. It is special in terms of price but it isn't any stronger. The "Rock Crusher" was built for …

Complete Guide to Muncie Transmissions

GM's goal with the Muncie four-speed was to produce a better shift employing larger synchro cones. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963. The M22 Rock …

M-22 "rock crusher"

He mentioned he had a M22 rock crusher in his car, and how rare it was because only a few of the M22's were "Rock Crushers". ... this made the gear teeth stronger and less likely to break under extreme loads (such as racing conditions). ... they all had that rare 68 chevy with a corvette 327, rock crusher muncie and a 12 bolt posi that they ...

Muncie M-22 or tremec 5 speed | Team Camaro Tech

I was planning on getting a muncie rock crusher for my 68 cause ive heard theyre awesome trannies. ... at all and if any gm tranny I would get the M20 if you must have the manual and but put 3.73 gears in. Truely manuals break lots of parts when raced and are not great in heavy traffic. they still hold a certain cool factor but the novality ...

Muncie I.D. chart | Chevy Tri Five Forum

Muncie 4-speed Transmissions

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. Muncie also had a second close-ratio transmission coded M22 and known as the "rock crusher," which was used behind performance big-block engines and in some Corvettes. These M22 units are ...

Muncie 4 Speed Transmissions

Identifying Muncie 4 Speeds III by Paul Cangialosi : The most popular question has to be that everyone thinks they have the famous "rockcrusher" M22 4 speed. This had the same gear ratios as the M21 but with a heavy duty gearset. The reason you may ask? Well it wasn't designed so that you could go drag racing on Saturday night or impress ...

M-22 vs. BW ST-10

How does the Muncie M-22 rock-crusher trans compare to the Borg Warner Super T-10 Power Brute transmission ... and break the gears. But the M-22 has better gear …

Muncie 4-Speed Identification Guide

Serial numbers for Muncie 4-speeds always begin with the letter "P," which stands for Muncie Plant (not "passenger car.") "M" and "N" were used to identify 3-speed Muncies; "O" identifies the Saginaw 3-speed with overdrive. Serial …

Muncie 4 speed....M21, M22, Rock Crusher? | The …

from Southern Ok. ""You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously.. Actually the 3rd gear station becomes …

What Gear oil do you use in your Muncie?

Torco, Lucas and other 75-90W unless it is a M-22 that needs a "special" gear oil for it's gearset. I use Redline Shockproof 75-250 in my "Rock-crusher" but, synthetic seems to leak past the gasket technology of our Muncies (a very slight leak but after sitting weeks in the garage, a penny size pool can be seen.)

The Muncie 4 Speed Transmission Taught A Generation Of …

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 m20 vs M21 | Hot Rod Forum

M20 has weak internals and case but ok for street and chirping street tires, the M21 is a better choice for muscle on the street and a little weekend drag racing but the case is week Ive sheared the case ears off and twisted off tail shafts when running wrinkle wall slicks, the M22 (the rock crusher as we racers called them) are designed to take abuse from high HP and …

Muncie 4 speed....M21, M22, Rock Crusher? | The H.A.M.B.

Muncie 4 speed....M21, M22, Rock Crusher? Discussion in 'The Hokey Ass Message Board' started by Buzznut, Jun 26, 2008. ... you flip the 3-4 shift lever on the side of the trans so it points down instead of up and your shift pattern remains the same. Halfdozen, Jun 28, 2008. ... I currently have an M22 Rock crusher in my '56 Chevy pickup, and ...