M21

[Swampyankee74]

This weekend I purchased a muncie m21. My cab has a low tranny hump. The truck originally had a 3 speed manual.  Which is roughly the same size. The truck is all disassembled so it's hard for me to take any measurements. Has anyone put a muncie 4 speed in the low hump trucks? Is there any clearance issues?

[zieg85]

No clearance issues at all.  Same length and will take the same driveshaft yoke as the 3 speed manual

[Swampyankee74]

Thank you zieg! I thought it would work. But no way to measure. Cab is off frame and in a different building. Thank you very much

[zieg85]

Thank you zieg! I thought it would work. But no way to measure. Cab is off frame and in a different building. Thank you very much

You're welcome.  Word of advice.  If you have a high geared truck 2.56,.2.73, 3.08 or 3.42 with oversized tires starting out is not going to be fun.  Typically the M21/M22 transmissions used 3.73 rear or higher which wasn't an issue.  Rowing through 4 gears is fun. 

[Swampyankee74]

Yea the rear end is 3.73's. M21 is going behind a stroker that dynoed at 464hp. Tranny was built by a reputable shop outside of boston,, they say good for 800 hp (we'll see), mcleoud clutch, and a lake wood bellhousing. I'm a ways from driving it, but excited. Should be a fun toy.

Sent from my SM-S515DL using Tapatalk

[Swampyankee74]

Zieg, what shifter handle did you use on your muncie m? I was told a shifter handle for a chevy 2 nova was what I needed. That it will work with the bench seat?

[zieg85]

Zieg, what shifter handle did you use on your muncie m? I was told a shifter handle for a chevy 2 nova was what I needed. That it will work with the bench seat?

Trans was out of a Chevelle

[Swampyankee74]

Thank you zieg