1975 Cutlass 350 4bb

Cecil Anderson · November 5th, 2007, 01:45 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 · November 5th, 2007, 08:04 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 · November 6th, 2007, 11:05 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 · November 7th, 2007, 10:37 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 · November 9th, 2007, 01:45 AM

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

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November 5th, 2007, 08:04 PM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 1,145	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.

November 6th, 2007, 11:05 AM	#3 (permalink)
yogi442 Registered User Join Date: Dec 2004 Location: Blaine Wa Posts: 88	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.

November 7th, 2007, 10:37 AM	#4 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 4,286	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.

November 9th, 2007, 01:45 AM	#5 (permalink)
Cecil Anderson Registered User Join Date: Sep 2007 Location: Cambridge England Posts: 97	Thank you for the help, that sorted it out for me. Thanks Thanks ANDY