How To Identify Chevy Four-Speed …

The M20 and M21 used a gearset with a more angled tooth design on each gear (left). The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles. The gear ratio of …

Muncie Stone Crusher 4 speed transmission

Used - Good. Muncie Stone Crusher 4 speed transmission. Wapwallopen, PA. Location is approximate. Message. Electronics. See all. $100. Garmin Striker 4. Claremore, OK. $20. Touch screen mp3 player bluetooth reg 100 selling 30. Miami, OK. $5. LOGITECH B 120 WIRED MOUSE M-B0001.

Muncie four-speeds | The Online Automotive Marketplace

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.

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 Muncie 4 Speed Transmission Taught A …

The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress but also increased noise, leading to the nickname as the transmissions rattled …

M22-Wide vs M22 "Rock Crusher"

the old "Rock Crusher" was a "close ratio trans, the same as the M21... the new "wide" in a widfe ratio, similar to the M20 (ratio-wise)... Both version will have similar RPM drops between 1st-2nd and 2nd-3rd, but the wide ratio will have a bigger drop between 3rd-4th, hence the "wide ratio" name...

Technical

I have some other numbers i will include in the pictures. From what i have looked up i believe its a 66-67 m21 but id like if anyone has any input to what it is for sure. Thank you for any input. I paid 300 bucks for this transmission a couple years ago and plan to replace a blown up saginaw 4 speed in my car.

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

""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.. Kinda nice if you want the Muncie look and an overdrive"" Actually the 3rd gear station becomes the OD and the 4th gear station becomes 3rd,so the shift pattern is a little d,1-2-4-3.

Muncie M22 4 Speed Transmission Close Ratio With New Rock Crusher …

Find many great new & used options and get the best deals for Muncie M22 4 Speed Transmission Close Ratio With New Rock Crusher Gears RESTORED at the best online prices at eBay! ... 1972 Muncie M22 Rock Crusher 4 Speed Transmission ORIGINAL C CODE (#267075875534) ... Verified purchase. Item arrived as described. Good communication with …

Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road …

Randall D Resler II on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. Holiday SALE !!! ... I just got my m23z for my 1970 Gto and the transmission is amazing. I can't say enough good things about Jeff and this transmission. Excellent customer service and extremely knowledgeable.

Muncie 4 speed vs Saginaw 4 speed? | The H.A.M.B.

Saginaw's come in three or four different gear ratios, making it a great medium HP trans in my opinion....also as said here .....very low cost compared to others. I am using a two ring shaft which is a 3.11 first gear with a 3.36 rear end that gives mg good performance for my little warmed up 283. Here are the gear ratios available: Saginaw 4 speed

Hot Rods

Anything different that that is just a "regular" T-10; that transmission began being used in 1957 by GM; it was phased out with the arrival of the Muncie 4-speed, until the beefed up and improved versions started showing up in 1974, the Super T-10 (Super Power Brute T-10 was the actual name).

Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed…

STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST MADE with fill and drain plugs. C355 Forged Aluminum Mid …

Muncie 4-speed transmission information

The fact is GM did infact use Rock Crushers in Vettes as early as 65 when ordered with a big block or special performance order package and in Pontiac F-bodies as early as 69 with special Ram Air performance packages. The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963 through 1974. The basic ...

all new 4 speed debate. muncie vs borg warner what say you?

In the late sixties to mid seventies I raced a big cube, heavy, 4-speed, drag car. I had up to nine spare Muncie, new and used, parts trans for this car. I got really good at …

Guide to Muncie M20, M21, and M22 Four-Speed …

Before you here are the basics of Muncie M20, M21, and M22 four-speed transmissions. Glean the basics and use them in your research. Expect to find various …

Muncie M22 Rock Crusher 4 Speed Transmission for sale

1972 M22 P2T03C 3925661 Rock Crusher Muncie 4 Speed Transmission Case Dec 3rd. Opens in a new window or tab. Pre-Owned. $549.99. or Best Offer. Free local pickup. 12 watchers. Sponsored. brmay-8191 (8) 0%. How To Rebuild Muncie 4-Speed Manual Transmission M20 M21 M22 Rock Crusher.

1967

GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four speed. Designed for the highest performance models.

Stout 4-Speed. Which is best? | The H.A.M.B.

I am building a decent horsepower Poncho 400. I am researching transmissions and located a couple that I would like. Found the old Muncie "Rock Crusher", and read up about it. Found a Mopar A833, and read up on it. I want to keep a 4-speed so that puts out the T56 plus I heard that Tremec will melt with that much torque...

Muncie 4 Speed In A Truck?

All Muncie 4 speeds are not the same. Personally I'd look for an np833. But if you go Muncie before you install it,look real hard,the counter shaft actually goes through the transmission case the only thing sealing it is the.interference fit between the shaft and the case,make sure the one you buy is not wallered out there.

all new 4 speed debate. muncie vs borg warner what say …

In the late sixties to mid seventies I raced a big cube, heavy, 4-speed, drag car. I had up to nine spare Muncie, new and used, parts trans for this car. I got really good at changing trans between rounds at the strip.. Busted cases, clusters, second gears, fourth gear,exploded synchro drums, broken side cover mechanisms..

Muncie M22 Rock Crusher 4 speed

I do not claim to be a transmission expert and could be wrong but the "real" rock crushers had straight cut gears....not helical cut gears. I believe they were first released by GM in 1969 or 1970. I had one in my 1970 Chevelle SS 454-450HP LS6 car. I bought it new. The Rock Crusher was very noisy due to the straight cut gears.

Midwest Muncie | Muncie 4 Speed Transmissions And …

Recent Comments. Randall D Resler II on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. Holiday SALE !!! Jeff Collins on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. Holiday SALE !!! Thomas N. on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road …

How much power can a Muncie 4 speed handle

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.

Muncie M21 4 Speed Transmission Rock Crusher Close …

1971 muncie 4 speed transmission worked great when it was removed comes with with hurst shifter and hydraulic throw out bearing included is all the casting numbers so you can look it up its a close ratio m22 32 spline output ... Muncie M21 4 Speed Transmission Rock Crusher Close Ratio 2.20 3925661. ... Good seller, good packaging, product as ...

Guide to Muncie M20, M21, and M22 Four-Speed …

The T-10 four-speed was an evolution of the T-85 three-speed transmission, with both of these transmissions being quite similar in appearance. If you've ever looked at a BorgWarner T-10 and a Muncie four-speed and …

The 1965 Chevrolet M22 Rockcrusher Transmission: The Mystical Transmission

Across the top of the page are the words "First Build 4/15/65 – 1st Shipment 4/19/65, recap of M22 (Rock Crusher) Trans." ... In 1965, all 4 speeds were ordered initially by the M20 4 speed designation. Depending upon the rear axle ratio, Chevrolet supplied either the M20 wide ratio or M21 close ratio transmission at their discretion. ...

Muncie 4 Speed Transmissions

How to Identify Muncie 4 Speed Transmissions. Identifying Muncie 4 Speeds III by Paul Cangialosi : ... The dead 2.20 first gear ratio which is the same in the M21 is not that good for off the line acceleration. You would need at least a 4.56 rear end gear to compensate for the dead first gear. That was OK when gas was cheap in 1967 and you did ...

How strong is a muncie

I think you at least need to step up to a Richmond 4 speed (iron case) or a Richmond 5 speed, if you want a manual transmission. A friend has a solid roller 468 that makes about 525-550 rwhp. He has a Jerico 4 speed with a Gear Vendors o/d unit. His Jerico has the same package for synchros, etc. that the Nascar Cup cars use on road courses.

Muncie 4-speed transmission information

Proper identification of the transmission type is absolutely necessary, but sometimes difficult due to several factors. First, GM used several different methods to label and …

Muncie M-22 Close Ratio Four Speed Transmission

If you are replacing a 27 spline Muncie M-20 or 21 your existing shifter will swap over. This is about as close to a factory supplied transmission as you can get. 3851325 1" Case Assembly. Mystery Muncie First Gear noise eliminated.

Muncie 4 Speed Transmissions

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?

Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road …

Home / 4 Speed / Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. Holiday SALE !!! Rated 5.00 out of 5 based on 15 customer ratings ... I can't say enough good things about Jeff and this transmission. Excellent customer service and extremely knowledgeable. He spent over a hour just answering my question and ...

426 Hemi Muncie Rock crusher Bell housing

You might be better off to sell one and buy a Hemi 4 speed. They are stout and shift well. That would make your bellhousing and clutch shopping much easier. Remember it's not just the belhousing, you'd have an oddball clutch too. Remembering back a long time ago, Chevy guys were actually adapting the Chrysler 4 speeds into their cars. Pat