M22 gears are also made of a higher-grade nickel alloy. The M20 and M21 cluster gears are cut at a 45-degree angle. The reduced gear angle of the M22 created a problem with noise (hence the name rock-crusher).
What is a Muncie Rock Crusher transmission?
An M-22 Rock Crusher is a Muncie four-speed transmission for cars made by General Motors in the 1960s. … 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 surface.
How can you tell the difference between Muncie M22 and M21?
Because main cases are often swapped rather than being repaired, the best way to determine if you have an M20, M21, or M22 is to simply look at the gears. Without removing the sidecover you can look at the input shaft and check for identification grooves cut into the spline.
What is the value of a Muncie 4 speed?
Muncie 4 Speed M20 or M21. $2899.99 OR WITH Muncie CORE exchange $2499.99. If you have no useable core the price is $2899.99!!
Did Muncie make a 5 speed?
Muncie also made 5 speed transaxles, but there was never a Muncie 5 speed in a Corvette.
What is a Muncie M22?
Muncie also had a second close-ratio transmission called an M22, which enthusiasts christened Rockcrusher; this was used in performance big-block engines and Corvettes and is a highly sought-after performance transmission today, and is the heavy-duty version of the 2.20 ratio M21 4-speed.
Did Ford ever use a Muncie transmission?
It was used right up to 1971 in the Ford Pickup F100 with an overdrive. The T10 shares the same case design, gear centers, and 3-4 synchronizer as the T85.
What’s the difference between a M21 and M22?
The M20 and M21 transmissions produced from 1963-’74 are easy to identify in both wide- and close-ratio units. The M22 to come later in 1967-‘74 is also a close-ratio unit, but much stronger than the M21, with a higher torque capacity.
How many splines does a M21 have?
Input Shaft Identification | ||
---|---|---|
Years | Type | Input Shaft Splines |
1963-’70 | M21 | 10 |
1970-’74 | M21 | 26 |
1967-’70 | M22 | 10 |
Where are Muncie transmissions made?
Muncie SM465 | |
---|---|
Production | 1968–1995 |
Body and chassis | |
Class | 4-speed manual |
Chronology |
Who makes Muncie transmission?
The Muncie 4-speed transmission is a legend among fans of GM muscle cars. For a 10 year period starting in the golden age of 1960s performance, General Motors‘ Muncie, Indiana transmission factory churned out several different flavors of this manual gearbox.
How do you shift a Muncie 4-speed?
What is the difference between a Muncie m20 and m21?
The Muncie M20 is basically a wide-ratio transmission and was intended for normal street driving use. … The Muncie M21 is a close-ratio unit originally designed to be matched with 4.11:1 or 4.56:1 GM 4 Series differentials. Of course, rodders get a little creative.
Can you make a 4 speed transmission a 5 speed?
If you are referring to swapping a transmission with more forward gears, then yes it is possible. A common swap for 5 speed equipped 99–04 Mustangs is to replace the transmission with the 6 speed out of the 03–04 Cobra Mustangs.
When did the 5 speed transmission come out?
Five-speed transmissions became widespread during the 1980s, as did the use of synchromesh on all forward gears.
What is a top loader 4 speed?
The Top Loader four-speed transmission is a fully synchronized type in all gears, except the reverse sliding idler gear that is in constant mesh. All forward-speed changes are accomplished with synchronizer sleeves, instead of sliding gears.
What is the difference between a Muncie and a Saginaw transmission?
At a quick glance the Muncie can be easily distinguished from the Saginaw since the reverse lever on the Muncie is mounted on the extension housing of the transmission, whereas on the Saginaw transmission the reverse lever is mounted in the side cover of the transmission.
What fluid goes in a Muncie transmission?
The best lubricant to use in a Muncie, T-10, or Super T-10 is a conventional GL-4. Stay away from synthetic lubricants since there have been too many Muncie, T-10, and Super T-10 owners who have used synthetic lubricants and have had their transmission synchronizers succumb to premature failure.
Why do they call it a granny gear?
Opinions vary on what constitutes a granny transmission, but in a nutshell it’s a manual transmission with an extremely low gear ratio that allows the vehicle to crawl along at a super-slow pace akin to that of a kindly old granny shuffling along.
How many splines does a Muncie 4 speed transmission have?
Years | Type | Input Splines |
---|---|---|
1963 – 1965 | M20 | 10 |
1966 – 1970 | M20 | 10 |
1971 – 1974 | M20 | 26 |
1963 – 1965 | M21 | 10 |
What cars did the T56 come in?
Over the years, the T56 took on a several different forms in the GM world—from the F-bodies to the Corvette, GTO, CTS-V, and SSR pickup. Each of these had its own distinct nuances, including different gear ratios. And, of course, just when we started to get a handle on it, Tremec introduced the TR6060.
What is the difference between a close-ratio and wide ratio transmission?
A: A wide-ratio transmission has a more drastic change in gear ratios between first and second, and third and fourth, with fourth gear being 1:1. A close gear ratio is more gradual, but again ending up at 1:1 in fourth gear. … With a street-friendly gear like a 3.73:1 or lower, go with the close-ratio transmission.
How do I know if my m21 has a gearbox?
How do I know if my Chevy 4 speed is manual?
While it’s obvious that the four speed will use three shift-linkage arms and the three speed will have two, if the first letter is R, then you have found a four speed. If it starts with an S, you are looking at a three-speed Saginaw.
Who makes the 4L60E transmission?
The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982.
How do you count a clutch spline?
What does SM465 stand for?
It’s thought the “CH” in CH 465 stands for Chevrolet, and the “SM” in SM465 stands for either Saginaw Muncie or Synchro Mesh. Either way, this is a very durable four speed manual gearbox that is ideally suited for off-road name and towing/hauling heavy…things.
Does Borg Warner still make transmissions?
We developed and introduced the world’s first high volume series production dual clutch module for automotive transmissions more than ten years ago. Today we produce over 800 thousand units annually, supporting the widest range of vehicle applications in the in the segment.
How do you install a Hurst shifter on a Muncie?
How do you stop a Hurst shifter?
To adjust the stop bolts, back the bolts out of the shifter frame until only a few threads remain. Push the stick firmly into third gear and hold. Screw in the stop bolt until contact is made. Release the stick and back the stop bolt out one turn and tighten the jam nut.
Does 4-speed include reverse?
The Muncie 4-speed is a constant-mesh transmission. This means that all the gears in the transmission, except for reverse, are always meshed together and spinning, even in neutral. … Fourth gear is technically a direct drive, so no physical gear is actually being used.
What is a Saginaw transmission?
Saginaw transmissions distinguish themselves from the Muncie four-speeds because the cases are cast iron rather than aluminum. Another quick way to determine a Saginaw is that the shifter arms are all located on the side cover of the transmission case (Muncie reverse arms are located on the tailshaft).
How do I identify a Borg Warner T 10 transmission?
Look at the transmission from the driver’s side of the vehicle by going under the vehicle at the driver’s-side door. If the transmission is off the vehicle, it is on the left side, when looking from behind the unit and the input shaft is pointing forward.
What is better 5 speed or 6 speed?
Efficiency. In recent 6-speeds, the extra speed from a 5-speed allows the engine to run at a lower RPM and save fuel, comparatively. This difference is most effective at highway driving speeds.
Is five-speed automatic or manual?
A 5 speed shiftable automatic transmission provides the ease of use offered by an automatic transmission coupled with the sportiness and increased fuel economy offered by a manual transmission.
Can you swap a 5 speed transmission?
Many of the five-speed transmissions found in late model Fords (the late model being those produced in the past 35 years) can be used in a swap with little modification. There are several good five-speed transmissions to choose from. The Borg-Warner/TREMEC T5, TREMEC 3550, and TKO, and the TKO 500/600.