Transmission #s decode

442 · 02-16-2008, 07:31 PM

Can anyone tell me where to find info on decoding this trans #?
76AA187170

Thanks,
RS

don71 · 02-16-2008, 07:50 PM

That appears to be a cadillac transmisson, IF its a turbo hydramatic 400. 76 could possibly be build year. I assume the AA is the two letter code from the tag rivoted on the case?

If its a th350, I don't know.... it has too many numbers.

This information comes from the auther Ron Sessions. Motorbooks International.

442 · 02-16-2008, 08:56 PM

Thanks, I'll have to check on the 2 letter code, not sure if its AA or not. I think it's a TH400 though. Does the Caddy transmission bolt up to the Olds big blocks?

Thanks,
Richard.

Olds64 · 02-17-2008, 01:14 PM

Cadillac transmissions won't bolt up to an Oldsmobile engine. Buick, Oldsmobile, and Pontiac share the same bellhousing pattern.

02-16-2008, 07:31 PM	#1 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 27	Transmission #s decode Can anyone tell me where to find info on decoding this trans #? 76AA187170 Thanks, RS

02-16-2008, 07:50 PM	#2 (permalink)
don71 feed the pig Join Date: Jun 2007 Location: Central Missouri Posts: 206	That appears to be a cadillac transmisson, IF its a turbo hydramatic 400. 76 could possibly be build year. I assume the AA is the two letter code from the tag rivoted on the case? If its a th350, I don't know.... it has too many numbers. This information comes from the auther Ron Sessions. Motorbooks International. __________________ 1971 Cutlass S Holiday coupe with a 455/th400 3.23 rear and whole lot of miles. Keep'em running boys!

02-17-2008, 01:14 PM	#4 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 2,297	Cadillac transmissions won't bolt up to an Oldsmobile engine. Buick, Oldsmobile, and Pontiac share the same bellhousing pattern. __________________ "Some men are Baptists, others Catholics. My father was an OLDSMOBILE man." Ralphie Billingsley A Christmas Story 1983 "We rei-eign, supreme, ooooh god! Burrito supreme, and a chicken supreme, and a CUTLASS SUPREME!" Tenacious D 2007

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02-16-2008, 08:56 PM	#3 (permalink)
442 70' W-30 Convertible Join Date: Mar 2007 Location: Virginia Posts: 27	Thanks, I'll have to check on the 2 letter code, not sure if its AA or not. I think it's a TH400 though. Does the Caddy transmission bolt up to the Olds big blocks? Thanks, Richard.