Quote:
Originally Posted by West Coast GTO
Boy, here come probably this years stupidest or ignorant question: I thought the M21( Rockcrushers) whined, do the M22's whine noticeably and can I assume that my car does also have a M22( 73 original trans) ?
BTW, ignorance doesn't mean stupid, only lacking information( I put that in there for my own good).  |
I've never understood why some people cal any Muncie a 'Rock Crusher'...
As mentioned earlier, the one really alluded to by the term 'Rcok Crusher', is only the M22;
Which had the same gears ratios as the M21, but used straight cut gears - which made the whine.
It's absolute music...
Quote:
Originally Posted by West Coast GTO
O.K.
Earlier in this post Bentwheelbob makes a reference to the M22 trans whining. I guess my question should have been: does the H/O cars all have M22's rather than M21's or was that an option?
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IIRC what I've read correctly, the M22 was developed for the Corvette, and as such, was seldom used in a non-Chevrolet;
Once again, if my memory serves me correctly, the muncie transmissions used in Pontiac's goes like this
1967-1973 wide ratio = M20
1967-1970 close ratio = M21
1971-1972 close ratio = M22
1973 wide ratio = M21*
(iirc there has been some speculation as to actual transmissions used for 1973, and I believe early in the 1974 model year, the only four speed available was the Borg Warner Super T-10)
This thread is great...
The '72 and '73 Formulas both look great!