Quote:
Originally Posted by Adecco
correct on the tail section but it was most likely what GM did for the casting number 3885010 is for years 1965-1967 M20/M21/M22 transmission's
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After Feb. 65, the tail sections were all 3857584 thru 69.
Casting #3851325 is 65
Casting 3885010 is 66 and 67
Casting 3925660 is for 68 and 69