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For example P7C05 will read Muncie four speed aluminum for passenger car 1976 March 5th 1969 1974 codes include a suffix letter at the end to aid in identification of transmission ratios A = 1st gear wide ratio M20 B= 1st gear close
The body was rust free Originally built in Van Nuys CA and sold new in La Puente CA All date code correct parts were used Some parts used on the build are original LS6 parts Correct 1970 4 bolt 454/450hp block M22 4 speed Rock Crusher Muncie transmission and original LS6 CRW 410 12 bolt posi traction rear end
·A Zack I am excited that you and your father are working on a project car is what makes the car hobby so great The Muncie four speed transmission was used with many different
·Although some claim that the M23 is a rock crusher it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears common to the rock crusher M22 transmission This chart so far has been very accurate in identifying the muncie trans over the years so I wanted to share
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
· 66 Chevelle SS396 L 78 M 20 4 speed posi Black on Black numbers matching SOLD 67 Cutlass with a 540 67 Camaro SOLD 65 Biscayne 2 dr post kind of a BIG Chevelle Vega S/G For Sale with REAL nice 18 degree SB motor parts and a 350 in it several Olds 442 s funny lookin Chevelles 2 sold
1971 MUNCIE M22 3925661 Muncie Trans 4 Speed P1B03C Camaro Chevelle Corvette $5 Returns must be shipped back prepaid and require preapproval with our "Return Material Authorization" Number written on the outside of the package 68 69 C3 Corvette M22 Muncie 4Speed "ROCK CRUSHER" Trans 10 Spline Italian Gears $2 Buy It
·The 1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM s production codes The 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
NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $ Also available gasket set without bushing and seals as pat number 18 455 103 From $ Muncie Gasket Seal Bushing Kit 27 spline less durable standard front bearing that came originally in this trans From $ Muncie Caged Pocket Bearing with 17 rollers Caged Pocket bearing
·Identifying Muncie 4 Speeds Several things are needed to identify a Muncie correctly The first is a main case casting number Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines Third are date codes and VIN numbers that help confirm that the above case and gears belong together
·Team Chevelle #998 1965 Malibu SS L79 2006 GTO 2004 GTO 1969 C10 Shortbox Fleetside
Identifying Muncie 4 Speeds Several things are needed to identify a Muncie correctly The first is a main case casting number Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines
The body was rust free Originally built in Van Nuys CA and sold new in La Puente CA All date code correct parts were used Some parts used on the build are original LS6 parts Correct 1970 4 bolt 454/450hp block M22 4 speed Rock Crusher Muncie transmission and original LS6 CRW 410 12 bolt posi traction rear end
·The transmission would make the same rock crusher noise but I would have a much tougher transmission 1966 Charger 383 727 Torqueflight 1970 SS 454 Chevelle LS5 2 M22 12 bolt
·The 764 extension housing indicates the transmission has a 32 spline output which all 71 through 74 M20 M21 and M22 Muncies and the 1970 M22 had A M20 with the 32 spline output and 26 spline input is a desireable Muncie as it was stronger than earlier Muncie M20s Be aware that they are also 3/4 inch longer than earlier 27 spline output Muncies
·Levon Hovagimian Team Chevelle #279 2015 Camaro ZL1 SOLD 70 Chevelle SS 454 LS5 4 speed SOLD 1966 427 Corvette SOLD 1973 Camaro IHRA Hot Rod LS 6 Auto 121 Chased a or better SOLD
·As I said earlier when I modify an original 68 72 Muncie handle to fit a Hurst shifter it is permanently ruined as far as ever being able to bolt back onto a FACTORY Muncie shifter The factory 68 72 Muncie handle has an angle on the lower end with 2 bolt holes to bolt it to the shifter I cut this angle off right at the bend
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 function properly You can identify several unique signs that identify an M 22 "Rock Crusher " even if it does not have a GM hallmark imprinted on its
Behind the big block the storied Muncie M22 Rock Crusher hangs a correct 3925661 casting number in front of a Muncie P M22 C assembled on March C 16th 16 1970 0 build stamp That gearbox twists torque to a correct 12 bolt axle that according to its LS6 spec CRV assembly stamp is built around a posi traction differential
Either the Muncie M22 Rock Crusher close ratio 4 Speed manual transmission or the 3 speed M40 Turbo Hydra Matic automatic were available on the Chevelle LS6 This amazing Chevelle LS6 underwent a nut & bolt frame off restoration during which time all pertinent numbers were verified throughout the entire car to verify its numbers
·Pass on the old junk Get Paul or Jody to build you a trans on an Autogear super case For the guy that said M22 S were not for street but for racing I beg to differ Nothing more satifying than hearing that rock crusher growl 69 Camaro big block 396 M22 Ride YouTube Muncie M22 4 Speed Rock Crusher Gear Whine YouTube
·ABSOLUTELY NOT ALLLLLLLLLLLLLLLL repeat ALLLLLLLLLLLLLLLLLLL the M20 or M21 gears CANNOT be mixed one gear or all gears with ANY M22 gears ALLLLLLLLLLLLLLLLLLL M22 gears can ONLY be used with M22 gears On the outside there is NO WAY to identify FOR SURE an M20 M21 M22 EXCEPT by the rings on the input shaft
·Type Codes A M20 B M21 C M22 1964 Here is an example from a 1964 Chevelle from Fremont CA Note the H103065 stamped on the flange and the date is shown by the P1030 stamping in the upper right of this photo The VIN derivative stamping positively identifies this as a 1964 Fremont Chevelle because the letter "H" was only used in
·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 1 first gear and the M21 close ratio 1 first gear
11 ·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 highly sought after for performance applications The term "rock crusher" refers to the noise made by the meshing of the strong er helical gears in the M22
