tranny ID help [Archive] - Chevelle Tech

: tranny ID help


NYCRAT
Mar 11th, 04, 6:48 PM
If anyone can help with these numbers I would be grateful.
4 Speed GM
Big numbers on case 3925661
small numbers near the rear of the case: pos26a
I was originally told it was a muncie m-21 now a friend says its a saginaw. :confused: Which one is it??? can anyone tell from these numbers?
thanks

crashent
Mar 11th, 04, 8:40 PM
nycrat, You have a Muncie 4-speed built Nov. 26 1969 to be used in a 1970 model year car. The "A" at the end of the "P" number (build date) says it started life as an M-20
A= M-20
B= M-21
C= M-22
Hope this helps...Crash

shooter
Mar 11th, 04, 8:44 PM
3925661= Muncie 70-74 case

P=Muncie 4sp
0=1970 model year
S=Nov(69)
26=day of month
A=M20

Rene
66_Malibu

NYCRAT
Mar 12th, 04, 10:08 AM
Thanks Shooter,Crash at least I know what it is now.