What do these #'s mean? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Martin64 · 11-29-2003, 09:35 PM

I just acquired 3 transmissions, 1- 2 speed "Power Glide"
and 2 350TH.

On the 350's, the housings are different.

One comes to a "V" at the top and the other comes to a "U".

On the "U" shape top there's a casting number 864Q239 and below that is CFD9 and then in a circle that's divided like a Mercedes-Benz hood ornament are the numbers 10-75 at the bottom (inside the circle) and 27 in the top right (also inside the circle).

The other 350 with the "V" shape has the numbers inside 2 circles that look something like this:

626 1 70
1675 T 54

The 626 and 1675 are in one circle and the 70 and 54 in the other circle.

Do any of you transmission guru's tell me what I have?

**old Rusty C10** · 11-29-2003, 09:37 PM

on the older transmissions the top two bolts kinda have a valley in between em is a GMC trans the ones that are kinda on alevel are a chevy one

Martin64 · 11-30-2003, 02:50 AM

I found something else and I don't know if it has any significance, the one with the "V" has an orange stripe on the inside of the bell and one on the outside, both on the passenger (right) side

Longhorn Man · 11-30-2003, 03:07 AM

Rusty, would a TH350 have a seperate bellhousing for GMC verses Chevy since the GMC trucks used chevy engines? (Except the 305/351 V-6 engines which had TH400's anyways) Considering the TH350 came out in 69 and the GMC stopped using pontiac engines way before that.
Just wondering.

11-29-2003, 09:35 PM	#1
Martin64 Registered User Join Date: Oct 2003 Location: Yuma, Az Posts: 477	What do these #'s mean? I just acquired 3 transmissions, 1- 2 speed "Power Glide" and 2 350TH. On the 350's, the housings are different. One comes to a "V" at the top and the other comes to a "U". On the "U" shape top there's a casting number 864Q239 and below that is CFD9 and then in a circle that's divided like a Mercedes-Benz hood ornament are the numbers 10-75 at the bottom (inside the circle) and 27 in the top right (also inside the circle). The other 350 with the "V" shape has the numbers inside 2 circles that look something like this: 626 1 70 1675 T 54 The 626 and 1675 are in one circle and the 70 and 54 in the other circle. Do any of you transmission guru's tell me what I have? __________________ Martin Gibson USAF Retired 1964(-ish) C10

11-29-2003, 09:37 PM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	on the older transmissions the top two bolts kinda have a valley in between em is a GMC trans the ones that are kinda on alevel are a chevy one __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

11-30-2003, 02:50 AM	#3
Martin64 Registered User Join Date: Oct 2003 Location: Yuma, Az Posts: 477	I found something else and I don't know if it has any significance, the one with the "V" has an orange stripe on the inside of the bell and one on the outside, both on the passenger (right) side __________________ Martin Gibson USAF Retired 1964(-ish) C10

11-30-2003, 03:07 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Rusty, would a TH350 have a seperate bellhousing for GMC verses Chevy since the GMC trucks used chevy engines? (Except the 305/351 V-6 engines which had TH400's anyways) Considering the TH350 came out in 69 and the GMC stopped using pontiac engines way before that. Just wondering.



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