1987 Cutlass Transmission

marcar1993 · 04-24-2007, 06:00 PM

I have a 1987 cutlass with a 307. I want to do some performance work to the motor. I'm curious as to what trans is in the car. It is a Cutlass supreme broughm with a 3 speed column shift automatic. Does anyone know?

Big Cee · 01-14-2008, 08:58 AM

The money that u would put in that 307 would be lost.This is not a good
engine to Soop up.You might want to get 350rocket or a 403.
By the way ! you might have a Th200c Transmission.
I would swap out for a TH350 or TH 400, they take more punishment.

Olds64 · 01-14-2008, 05:47 PM

Big Cee is correct. You would be better off rebuilding a 350 or 403 for your car. Externally, they are the same as a 307. The only reason you might want to keep the 307 is if you are going to do a complete restoration and make it into a show car.

OLD SKL 69 · 01-17-2008, 11:44 AM

My friend has an 87 with a 307 and a 200R4 Overdrive stock. If you have the overdrive unit, which I think you have, I would beef it up if you plan on going to a 350 or 403. It would be more expensive than building a 350 or 400 Turbo but you would be quicker off of the line and cruise at a lower RPM.

marcar1993 · 01-21-2008, 11:43 AM

I have since done a lot of research and talked to alot of people. I have a roller 307 with 7a heads and a 200c. A 7.5" rear with 2.14's

I have a plan all laid out now as to what I want to do. I'm looking for a 403 and a 4 speed (the standard kind

) I'm probably going to get a complete 3.08 or higher rear (7.5) until I can afford a 3.23/3.42 8.5.

04-24-2007, 06:00 PM	#1 (permalink)
marcar1993 Senior Member Join Date: Apr 2007 Posts: 113	1987 Cutlass Transmission I have a 1987 cutlass with a 307. I want to do some performance work to the motor. I'm curious as to what trans is in the car. It is a Cutlass supreme broughm with a 3 speed column shift automatic. Does anyone know?

01-14-2008, 08:58 AM	#2 (permalink)
Big Cee G- Body Ryder Join Date: Jan 2008 Location: Memphis ,Tn Posts: 6	A little Help! The money that u would put in that 307 would be lost.This is not a good engine to Soop up.You might want to get 350rocket or a 403. By the way ! you might have a Th200c Transmission. I would swap out for a TH350 or TH 400, they take more punishment.

01-14-2008, 05:47 PM	#3 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,073	Big Cee is correct. You would be better off rebuilding a 350 or 403 for your car. Externally, they are the same as a 307. The only reason you might want to keep the 307 is if you are going to do a complete restoration and make it into a show car. __________________ "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

01-17-2008, 11:44 AM	#4 (permalink)
OLD SKL 69 Member Join Date: Jan 2007 Location: Long Island, New York Posts: 39	My friend has an 87 with a 307 and a 200R4 Overdrive stock. If you have the overdrive unit, which I think you have, I would beef it up if you plan on going to a 350 or 403. It would be more expensive than building a 350 or 400 Turbo but you would be quicker off of the line and cruise at a lower RPM. __________________ 1969 Olds Cutlass under restoration 350 w/headers, 2 1/2 exhaust w/flowmaster 40's Turbo 400 w/shift kit

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01-21-2008, 11:43 AM	#5 (permalink)
marcar1993 Senior Member Join Date: Apr 2007 Posts: 113	I have since done a lot of research and talked to alot of people. I have a roller 307 with 7a heads and a 200c. A 7.5" rear with 2.14's I have a plan all laid out now as to what I want to do. I'm looking for a 403 and a 4 speed (the standard kind ) I'm probably going to get a complete 3.08 or higher rear (7.5) until I can afford a 3.23/3.42 8.5.