stickshift Posted August 27, 2009 Share Posted August 27, 2009 Which tranny is better M21, M22, or super T10. Quote Link to comment Share on other sites More sharing options...
Chevyss Posted August 27, 2009 Share Posted August 27, 2009 M-22 rock crusher. Quote Link to comment Share on other sites More sharing options...
CrazyDavey Posted August 27, 2009 Share Posted August 27, 2009 Which tranny is better M21, M22, or super T10. Â here's my vote...if you want a smooth, quiet, easy shifting trans the M21 (or M20 if you want a wide ratio).....don't mind some noise and need something strong...M22....guess that leaves the super T10, my experience with them has not been super.... Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted August 27, 2009 Share Posted August 27, 2009 what Dave said. and the M22 takes a bigger yoke Quote Link to comment Share on other sites More sharing options...
Dans '70 Z20 Posted August 27, 2009 Share Posted August 27, 2009 With a big car like ours the lower first gear in the M-21 will benefit you off the line, unless you already have a low gear in the rear. That is why our cars came with the M-21 in the first place. Quote Link to comment Share on other sites More sharing options...
stickshift Posted August 27, 2009 Author Share Posted August 27, 2009 I purchased my tranny about 15 years ago. I was told that it was an M22 Rock Crusher out of an SS Chevelle. I did not find out that it was not until about two years ago when I replaced my clutch. When we droped the tranny my mechanic looked at it and said "thats not an M22, thats a Super T10". It has been in my monte since 1996.It has a Center Force Duel Friction Clutch Kit, and a Hurst comp shifter with a pistol grip that I rigged up. If I ever replace it it will be with 5 speed. Quote Link to comment Share on other sites More sharing options...
Z204me Posted August 27, 2009 Share Posted August 27, 2009 Hi...  I have an M22 in my 70...the car has a 12 bolt 3.73 posi. The M21 and the M22 have the same gear ratios...however, the M22 has "straighter" cut, stronger gears, thus the whirring noise in the first 3 gears. 4th gear, however, is nice and quiet, so the whirring noise does not exist in 4th gear (direct).  I do not have any personal experience with the T10 and/or the Super T10, so I cannot comment on their durability.  Regarding your question, I guess it would depend upon the rearend that you have or plan on having. Being that I have the 3.73 ratio, the M22 (M21 would be the same) is "acceptable" for city, streetlight, stop sign driving. If I had anything (numerically lower) than a 3.73 rearend, such as a 3.42, 3.08, etc. I would go with the M20 and/or a Super T10, as the M21/M22 would not be fun to drive in stop and go traffic. I do know that the T10's had more gear ratio options, so if you have like a 2.73, 3.08, etc. rearend, you might be better off with a T10 from a gear aspect. Recently, I see that you can now get "wide" and custom ratio M21/M22's as well...so I guess it boils down to if you like to sound "cool", and have more HP, with the M22 vs. the M21.  Maybe somebody with a T10/Super T10 can chime in here and give their opinion on them.  Here is a good website for the Muncies: Muncie  And here is some limited info on the T10's: Super T10  I went with the M22 because I have always wanted one - I love the sound of the gears whining in the first 3 gears. I also went with the M22 because of the stronger gears. The only downside is that I am turning 3,000+ RPM above 70 MPH - but, I mostly drive the car within the city, which is extremely fun!  I hope this helps you out. Quote Link to comment Share on other sites More sharing options...
CrazyDavey Posted August 27, 2009 Share Posted August 27, 2009 I purchased my tranny about 15 years ago. I was told that it was an M22 Rock Crusher out of an SS Chevelle. I did not find out that it was not until about two years ago when I replaced my clutch. When we droped the tranny my mechanic looked at it and said "thats not an M22, thats a Super T10". It has been in my monte since 1996.It has a Center Force Duel Friction Clutch Kit, and a Hurst comp shifter with a pistol grip that I rigged up. If I ever replace it it will be with 5 speed. Â what's the question then???? Quote Link to comment Share on other sites More sharing options...
stickshift Posted August 27, 2009 Author Share Posted August 27, 2009 I was just curious as to what was the best between the three. As for as the 5 speed goes, thats just wishful thinking. I work for the department of corrections, I just can aford to dream about this stuff.LOL. Any extra money that I save will go toward building the big block that I have my eye on, but thanks for the info. Quote Link to comment Share on other sites More sharing options...
CrazyDavey Posted August 28, 2009 Share Posted August 28, 2009 I was just curious as to what was the best between the three. As for as the 5 speed goes, thats just wishful thinking. I work for the department of corrections, I just can aford to dream about this stuff.LOL. Any extra money that I save will go toward building the big block that I have my eye on, but thanks for the info. Â gotcha Ken.... Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted August 28, 2009 Share Posted August 28, 2009 With a big car like ours the lower first gear in the M-21 will benefit you off the line, unless you already have a low gear in the rear. That is why our cars came with the M-21 in the first place. Â Â I think you mean the M20 Dan, the M20 has the deeper first gear and what came installed in monte's Quote Link to comment Share on other sites More sharing options...
kc8oye Posted August 28, 2009 Share Posted August 28, 2009 if your pockets are deep enough.. take a look at the T-56 6spd from a newish camaro ~ Quote Link to comment Share on other sites More sharing options...
Dans '70 Z20 Posted August 29, 2009 Share Posted August 29, 2009 Originally Posted By: Dans '70 Z20 With a big car like ours the lower first gear in the M-21 will benefit you off the line, unless you already have a low gear in the rear. That is why our cars came with the M-21 in the first place.   I think you mean the M20 Dan, the M20 has the deeper first gear and what came installed in monte's  Yep, Once again I stand corrected. I meant the M-20 but my typing skills and lack of sleep got the best of me. LOL Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted August 30, 2009 Share Posted August 30, 2009 I'll let it slide this time Dan, but don't let it happen again Quote Link to comment Share on other sites More sharing options...
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