what transmission is this??? - Page 2

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**Fast67VelleN2O** · #11 05-21-2014, 06:28 PM

If this is a 1966 or later transmission, it will have rings on the input shaft. One ring is M21, two rings is M20, no rings is M22. Can't always be sure of the no rings though since I have owned plenty of 1966 and later Muncies that had no rings on the input shaft but ended up being an M20 or M21 since it had a gear set replacement at some point.

COPO PETE · #12 05-22-2014, 11:16 AM

thanks for the info guys

**Day2_69Z** · #13 05-24-2014, 02:02 AM

P 8 A ... on a 660 case.... MUNCIE 68 M20

**Fast67VelleN2O** · #14 05-24-2014, 02:14 PM

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: daytwo69Z</div><div class="ubbcode-body">P 8 A ... on a 660 case.... MUNCIE 68 M20 </div></div>

Except 1968 transmissions weren't letter coded with the ratio.

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