I was wondering has oldsmobile built any v8 engines in the past years or so into their sedan models? I am wondering because a friend of mine has a 98 aurora with a v8 an he told me if it would be possible to swap it in place of the v6 he has in his 83 cutlass supreme and id also like to do this swap or is there any better oldsmobile newer v8 engine out there
Well taking into account that oldsmobile has been out of buisness for a good while and that there last real oldsmobile designed engine was the 307 or maybe that little quad 4 from the early 90s you are basically looking at using an older engine. However about any gm rwd engine/trans combo will bolt into our cars with the right mounts, that being said im not so sure if a front wheel drive aurora engine would work at all. Probably completly different mounts and i didnt think an aurora ever came with a v8
The Aurora did come with a 4.0 V8 that was based off the northstar engine. If you want a fuel injected v8 in the cutlass, do a LS swap. They are found in almost every bone yard. You can't just shove a FWD engine into a RWD car.
This swap has been done, but the mods to complete it are off the scale. The ones who did it were trying to be different. The North Star V8 and Aurora V8 are technically the same motor. Olds' 4.0 vs Caddy's 4.6, without valve covers you can't tell them apart. Issue one is he oil pan. I believe there is only one RWD pan and it's on one of caddy's RWD North Star vehicles. The small SUV I think.
Then there is the bell housing. Only the V6 F-body 3.8 transmissions will bolt to the North Star.
Most that did this swap say they will never do it again.
The biggest thing is the LS makes more power and torque down low than the North Star. The NS basic design is as a revving motor like Ford's Mod 4.6 just more efficient. Also unless converted, all 1999 down NS motors has very weak head bolts that pull out after a few years of service or way sooner after hard abuse. The difference is in the bolt threads.
I'm not sure about anyone doing this swap in a G-body. I recall only one attempt in a Monte. Don't know the outcome.
Oops I forgot to mention that The NS was a Olds/ Caddy design. It was a kinda 2 Quad 4s put together(2.3 Olds + 2.3 Olds = 4.6 Caddy). It was not Caddy's clean sheet design since the motor's basic architecture was Oldsmobile. So technically it was Olds' last V8 effort, improved on by Caddilac.
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