Author Topic: TH400 or TH350 (Read 6615 times)

Capper · « **on:** May 06, 2006, 12:42:58 PM »

I bought a 1978 Pontiac Trans Am project car and I'm not sure which transmission it has in it. How can I find out?

79Formula · « **Reply #1 on:** May 06, 2006, 02:00:31 PM »

Edit: nvm

Tin Indians Rule · « **Reply #2 on:** May 06, 2006, 04:13:56 PM »

crawl under the car and the look at the transmission pan. The TH400 and TH350 have two very different pans.

81BlackTA · « **Reply #3 on:** June 11, 2006, 08:50:27 PM »

The th350 has a square pan with one corner cut off. The 400 is completely different. Most likely its a th350. Could you even get a 400 in one of these cars anyone?

Eagle 1 · « **Reply #4 on:** June 11, 2006, 09:44:23 PM »

Quote

Could you even get a 400 in one of these cars anyone?

Yes. My sons TA had one.

Hitman · « **Reply #5 on:** June 11, 2006, 10:09:05 PM »

The turbo 400 tranny stopped in 1974.

Eagle 1 · « **Reply #6 on:** June 12, 2006, 12:04:10 AM »

My bad, I miss read the question. I thought you were asking could you even "get" a turbo 400 in one of these, as in would it "fit" in the car.
My sons car didnt come with one, but the previous owner had installed one, so it will fit with some mods.

ta78w72 · « **Reply #7 on:** June 12, 2006, 12:08:35 AM »

Quote from: Eagle 1

My bad, I miss read the question. I thought you were asking could you even "get" a turbo 400 in one of these, as in would it "fit" in the car.
My sons car didnt come with one, but the previous owner had installed one, so it will fit with some mods.

How can you be sure? Maybe he has a rare model

My T/A came with factory installed portholes....just like the 56 T-Birds.

Eagle 1 · « **Reply #8 on:** June 12, 2006, 12:24:55 AM »

Well it was a rare model alright.
It started out from the factory as a 1981 car. Somebody pulled the front end off and put a 79 front clip with the shaker hood and everything. Then they had put a 1970 ram air 3 engine out of a GTO with the turbo 400 tranny.
A buddy of mine bought the car and drove it for a couple of years and then blew the motor up. That was when we got the car. I overhauled the engine, and my son drove it for a little over a year and then wrecked it.
Man that was a fast car.