Hey guys I need help with my 4 speed trans numbers. The numbers on the front housing is 3885010, patten no 3088336. The numbers on side cover is gm-3884685. I would appreciate your help. Thank's.:yes::beers:

those are casting numbers, they don't mean/say much of anything.

Jerry,

the number to look for would look like, "P0710"

Okay went back and found these numbers P7T21, hope this is it. Thank's for the help.:hurray:

P= 4 sp Muncie
7=1967
T=Dec
21=21st

Thank's DAYTON68Z28 this was a big help.:beers:

Muncie 4-speed built Dec. 21st 1966 for early 1967 model year car... Crash