Main Case: 3925661 Stamped P1B08C, Feb 8th, 1971 Rock Crusher. Side Cover: 3950306 with Bolt-on Type Shift Shafts. Tailhousing: 3857584 with Right Hand, …
1971 Muncie 4 Speed Transmission Case 3925661 "Rock Crusher" M22 "85930" "CC2" New (Other) C $402.05. or Best Offer +C $126.06 shipping. from United States. S V p W o n s N R o r S e W d M Q. PETTIBONE Rock Crusher Headquarters Universal Engineering Watch Fob Cedarapids. Pre-Owned. C $49.47. Top Rated Seller Top Rated Seller.
64-UP M-22 (ROCK CRUSHER) MUNCIE TRANSMISSION FINE (26/32) WITH 3925661 CASE (BRAND NEW TRANSMISSION HAS 26 SPLINE INPUT SHAFT & 32 SPLINE OUTPUT SHAFT AT THE DRIVE SHAFT - HAS A NEW M-22 GEAR SET WITH 3925661 CASE) Update available, please refresh the page. my parts place . Login ...
1972 Chevy M21 Close Ratio Rock Crusher Muncie 4 Speed Transmission 3925660. Report item. - opens in a new window or tab. Description. Shipping and payments. eBay item number: 274949998880.
3925661 - 1971-'74 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.
The term "rock crusher" refers to the noise made by the meshing of the stronger helical gears in the M22. Later model 1971-'74 Muncies are also popular with racers, because these transmissions used a 32-spline output that is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications.
Brand new transmission has 26 spline input shaft and 32 spline output shaft at the drive shaft. Has a new M-22 rock crusher gear set with 3925661 case. This transmission includes all new parts. Nothing is used in this transmission. Pictures are for reference only and may not represent actual product being sold in …
Details about 1974 Chevy M22 Close Ratio "Rock Crusher" Muncie 4 Speed Transmission 3925661. Be the first to write a review. 1974 Chevy M22 Close Ratio "Rock Crusher" Muncie 4 Speed Transmission 3925661. Item Information. Condition: Used. Price: US $5,000.00. $216 for 24 months with PayPal Creditopens a installment calculator layer* $216 for 24 ...
Main Case: 3925661 Stamped P1B08C, Feb 8th, 1971 Rock Crusher. Side Cover: 3950306 with Bolt-on Type Shift Shafts. Tailhousing: 3857584 with Right Hand, (Passenger Side), Speedo Gear Set. Original GM M-22 Rock Crusher Gear Set with …
Details about 1974 Chevy M22 Close Ratio "Rock Crusher" Muncie 4 Speed Transmission 3925661. Be the first to write a review. 1974 Chevy M22 Close Ratio "Rock Crusher" Muncie 4 Speed Transmission 3925661. Item Information. Condition: Used. Price: US $5,000.00. $216 for 24 months with PayPal Creditopens a installment calculator layer* $216 for 24 ...
It was primarily designed as a road race transmission. The straighter angle of the gearset produced less heat and less end loading of the gear train. Combined with high impact alloy gears this 4 speed really pushed the limits of it's aluminum case in drag race applications. Although the gears are not spur gears ( completely straight ) they ...
Find many great new & used options and get the best deals for 1974 Chevy M22 Close Ratio "Rock Crusher" Muncie 4 Speed Transmission 3925661 at the best online prices at …
I don't know how many people I've had tell me "Oh ya this thing has a Rock Crusher (colloquial term for M22) in it. I've only heard the sound of the real deal once. Oct 1, 2008 #6. Bikefixr Veteran Member Lifetime Gold Member. Messages: 1,838 Likes Received: 111. Joined: Mar 13, 2006. Take a drive in the car. If you can talk to the passenger ...
But all 3925661 castings had drain plugs. Reading Serial and VIN Numbers. Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter.
The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with a higher nickel alloy. The straighter angle was designed to produce less end loading of the gear train and less heat but created more noise, thus the nickname "Rock Crusher" was born.
Latest video: https://youtu.be/WRyfMCQklhAFabricating a jaw rock crusher from scratch. Making the moving jaw of the crusher with replaceable jaw wear plate. ...
The 2.20:1 ratio is commonly designated as the Muncie M21 transmission. 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.
Find many great new & used options and get the best deals for 1964 & Up M-22 Rock Crusher Muncie Transmission Fine (26/32) 3925660 Case New at the best online prices at eBay! ... (26/32) W/ # 3925661 Case - New. C $3,432.54. Free shipping Free shipping Free shipping. 1964 & Up M-22 Rock Crusher Muncie Transmission Coarse (10/27) 3925660 Case ...
However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car.
Muncie M22 4-Speed-Rock Crusher Transmission - FRESH Muncie M22 Rock Crusher 4 Speed Transmission 2.20 1st Gear Close Ratio 26/32 Spline Main Case 3925661 Tail Housing 3978764 Side Cover 3952648 P.1B12C VIN 12894 Transmission has been completely restored inside and …
The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. The M20 and M21 transmissions produced from 1963-'74 …
M-22 "Rock Crusher" Identification. The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3.55 or lower numerically) unless someone has changed it.
64-up m-22 (rock crusher) muncie transmission fine (26/32) with 3925661 case (brand new transmission has 26 spline input shaft & 32 spline output shaft at the drive shaft - has a …
Auction Lot S202, Glendale, AZ 2020. LS6 replica. Frame-up restoration completed in 2020. Refurbished GM 454/450 HP engine, casting no. 3963512. M22 Rock Crusher 4-speed, casting no. 3925661. 12 bolt rear end 3.73 gears. Painted in its original color Cranberry Red 75. Front disc brakes. Power steering. New smoked glass. 14 inch SS wheels and BF Goodrich radial T/A tires.
Muncie M22 4-Speed-Rock Crusher Transmission - FRESH Muncie M22 Rock Crusher 4 Speed Transmission 2.20 1st Gear Close Ratio 26/32 Spline Main Case 3925661 Tail Housing 3978764 Side Cover 3952648 P.1B12C VIN 12894 Transmission has been completely restored inside and out!
Muncie M22 4-Speed-Rock Crusher Transmission - FRESH Muncie M22 Rock Crusher 4 Speed Transmission 2.20 1st Gear Close Ratio 26/32 Spline Main Case 3925661 Tail Housing 3978764 Side Cover 3952648 P.1B12C VIN 12894 Transmission has been completely restored inside and out! Asking...