1975 Cutlass 350 4bb

Cecil Anderson · 11-05-2007, 12:45 PM

What auto trans came on this model when new. It has never been worked on and is still working great, 56000miles I would just like to know which one it is. Andy

Redog · 11-05-2007, 07:04 PM

You can tell by the shape of the pan.

Usually they came with the 350 trans, but some may have the 400.

It depends on what the first owner ordered.

yogi442 · 11-06-2007, 10:05 AM

Cutlass models from the factory came with TH350 unless was ordered with factory tow package which consisted of a large angle bar welded across the frame to the front of the gas tank. These cars were equipped with TH400 transmissions. The other option was the 455, it came with special orders and would come equipped with TH400.

Olds64 · 11-07-2007, 09:37 AM

If the transmission pan is mostly square with a notch cut out of the side it is a TH 350. If it has an S shape in the transmission pan then it is a TH 400.

Cecil Anderson · 11-09-2007, 12:45 AM

Thank you for the help, that sorted it out for me. Thanks Thanks ANDY

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11-05-2007, 07:04 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 702	You can tell by the shape of the pan. Usually they came with the 350 trans, but some may have the 400. It depends on what the first owner ordered.

11-06-2007, 10:05 AM	#3 (permalink)
yogi442 Member Join Date: Dec 2004 Location: Blaine Wa Posts: 72	Cutlass models from the factory came with TH350 unless was ordered with factory tow package which consisted of a large angle bar welded across the frame to the front of the gas tank. These cars were equipped with TH400 transmissions. The other option was the 455, it came with special orders and would come equipped with TH400.

11-07-2007, 09:37 AM	#4 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,356	If the transmission pan is mostly square with a notch cut out of the side it is a TH 350. If it has an S shape in the transmission pan then it is a TH 400.

11-09-2007, 12:45 AM	#5 (permalink)
Cecil Anderson Member Join Date: Sep 2007 Location: Cambridge England Posts: 55	Thank you for the help, that sorted it out for me. Thanks Thanks ANDY