4 speed question

[jeff morocco]

i found a 4 speed case. can someone tell what these numbers mean?
3925660
p9505a
39m216441

THANKS

[YENKO DEUCE REGISTRY]

660 cases are for '68-'69, the application suffix of 'A' indicates a '69 since suffixes were not used in '68.

P9505A indicates: Muncie passenger, '69, 5 is probably an E for May 5th, A = M20.

Not sure which division was #3 - Buick?

[bruno17]

I believe its a 69 M20 muncie 4 spd

[bertfam]

It's a 69 M20 from a Pontiac (code 3), but I'm not sure which model. I don't know what plant "M" is, or what they built.

Ed

[Mr70]

That M-20 trans. code decodes it came on a 1969 Oldsmobile A-body originally.
3 is Oldsmobile.
9 is the last model year digit.
M stands for the Lansing Mi. plant.

[bertfam]

Rick,

3 is Olds? Is my P&A wrong???

(By the way, it doesn't show it but 5 is listed as Chevrolet. Didn't want everyone to think there was no Chebby division!!)

Ed

[bertfam]

You know, I just looked at that again. 1 is listed as Buick, but we all know that 1 is Chevrolet!! What gives? This is from my 1971 P&A 26 (Dealer Parts and Accessories Price Schedule). This book must use a different coding than what's normally used.

Sorry about that guys.

Ed

[crash]

1----Chevy
2----Pontiac
3----Olds
4----Buick
When decoding Muncie's...
660 main cases were used 1968-69 and the first half of 1970 model years... Hope this helps... Crash

[bertfam]

Yup. Found the designations on THIS SITE (about half way down).

[ QUOTE ]
Position 1: Division Identification
Always 1 for Chevrolet
(2 = Pontiac, 3 = Oldsmobile, 4 = Buick, 5 = GM Overseas, 6 = Cadillac, 7 = GM of Canada
9 = GM Overseas, C = Chevy Truck, T = GMC Truck)

[/ QUOTE ]

Ed

[jeff morocco]

thank you guys......now i have 10 more transmissions to decode