Muncie ID - The Supercar Registry

06-22-2018, 05:51 PM

bbbentley

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Join Date: Jul 2012

Location: Close to the old Norwood plant in Ohio

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Quote:

Originally Posted by seventieshow

You could put a mark on the input and output shafts, put it in first gear, and if the output shaft turns 2 and a half times with one turn of the input shaft, that would be a M-20 (2.52:1 ratio). An M-21 would turn a little less then that, at 2.20:1.

If it has 2 rings on the input, you don’t need to turn it. There is no mix and matching of parts. It is a M20, period.

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69 SS/RS 396 M20 X22 Nor 12B,72B,712 bought 1979
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