Join Date: Sep 1999
Location: Vancouver, WA, near Portland, OR
Thanked 0 Times in 0 Posts
Re: 4.3 Chevy vs. 3.8 Buick
Boy Mike, you upset me big time! Just kidding. The Buick's oiling problem can be dealt with by proper gear clearance on the oil pump, the right spring and a booster plate which runs about $20. This is assuming that the timing cover housing that the oil pump resides is not worn. The Buick 3.8 weighs appx. 150 or so pounds less than the Chevy 4.3. Buick parts and performance parts are not as readily available as Chevy parts and thus tend to be a bit higher priced. There are both Chevy and Buick/Olds/Pontiac, (BOP), versions of the TH-350 with adapters to go either way, I believe, if you had one engine and the other tranny. You could swap guts with present TH-350 to the other type TH-350 to avoid an adapter. Fuel injection and all the wiring/computers is way over my feeble brain, so I would have a carbureted engine. I have a Buick 252/4.1L V-6 that I had built up. It's now in the process of being mated to a Chevy 700R4 via adapter and Atlas II xfer. It's a great motor. I do sometimes wonder if I would have used the money I spent on the Buick to instead buy a 4.3 Chevy from Goodwrench, I could have bought a spare with the change left over. That's what I get for being different. Now to throw an idea to TimsCJ7. You could replace your Buick 231/3.8L V-6 with a Buick 350 V-8. Will mount up to same tranny as 231, uses same motor mounts. Might need to move radiator forward some and increase the capacity of the radiator. Otherwise it's a direct swap. Kinda depends on the strength of your tranny though. Like the V-6, the Buick V-8 also is lighter than the Chevy V-8. So many possibilities.
'66 Jeepster Commando w/Buick 252/4.1L V-6
'70 Wagoneer w/Buick 350 V-8
'76 Wagoneer w/AMC 401 V-8 (sold)