tranny swap

joelow83 · August 10th, 2003, 10:11 AM

i have an 83 old 98 the engine is a 307 200r4 iwas wondering is it possible to bolt up a th350 tranny out of a 78 caprice or is there a tranny that will bolt up to it with out alot of work.

70ragtop · August 10th, 2003, 10:54 PM

If the Caprice has a Chevy motor then you are out of luck. The Olds 307 Uses the GM BOP (Buick, Olds, Pontiac) bellhousing bolt pattern. If you want to swap a Trans in, you will need to find a donor from a Older Cutlass.

Why would you want to perform this swap? This will change your final drive ratio, making highway cruising and gas milage a little less tolerable.

powerplant455 · September 25th, 2004, 04:56 PM

u can put a chevy tranny behind an olds motor or(B.O.P.) i f u get the bellhousing adapter plate.

look in jegs or summit, their like 50 bucks.

some 350 trannys have dual bell housing bolt patterns.

goodwrench1984 · July 13th, 2006, 04:19 PM

Keep it simple and use the same trans, swapping parts can cause financial pain and other unforeseen problems.

Chris

August 10th, 2003, 10:54 PM	#2 (permalink)
70ragtop Member Join Date: Dec 2001 Location: Dallas, Texas Posts: 32	If the Caprice has a Chevy motor then you are out of luck. The Olds 307 Uses the GM BOP (Buick, Olds, Pontiac) bellhousing bolt pattern. If you want to swap a Trans in, you will need to find a donor from a Older Cutlass. Why would you want to perform this swap? This will change your final drive ratio, making highway cruising and gas milage a little less tolerable. __________________ Jeff Herbert (70RagTop) Dallas TX 70 Cutlass Supreme Convertible 68 Cutlass S Convertible 72 Cutlass Supreme Hardtop

July 13th, 2006, 04:19 PM	#4 (permalink)
goodwrench1984 Junior Member Join Date: May 2006 Location: South Jersey Posts: 26	Keep it simple Keep it simple and use the same trans, swapping parts can cause financial pain and other unforeseen problems. Chris

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August 10th, 2003, 10:11 AM	#1 (permalink)
joelow83 Junior Member Join Date: Aug 2003 Posts: 1	i have an 83 old 98 the engine is a 307 200r4 iwas wondering is it possible to bolt up a th350 tranny out of a 78 caprice or is there a tranny that will bolt up to it with out alot of work.

September 25th, 2004, 04:56 PM	#3 (permalink)
powerplant455 Junior Member Join Date: Sep 2004 Location: north dakota Posts: 4	u can put a chevy tranny behind an olds motor or(B.O.P.) i f u get the bellhousing adapter plate. look in jegs or summit, their like 50 bucks. some 350 trannys have dual bell housing bolt patterns.