Cadillac 4.5 into '88 Grand Prix.

[2.8 Grand Prix]

I am not changing my mind each day, I am just trying to find a cheap powerplant for my budget "custom" Grand Prix. I would rather have a 2.8, 3.1 or 3.4, but I can't seem to find one for under $250 with less than 150,000 miles. If I could get my hands on a wrecked '88-96 Grand Prix, Cutlass Supreme, or Beretta/Corsica I would jump on it.

I am just wanting to either repair my exsisting 2.8 or find a good-running, cheap 2.8, 3.1, or 3.4. Once again, if anyone has an engine that I could buy, let me know, Please! Thank you.

[IsaacHayes]

If you want caddy pushrod v8, I'd do the 4.9 before that motor.. At least it was all aluminum and had more power. My 3100 has 160hp stock lol

[SappySE107]

If you are going to change your mind every day on what motor you want to put in, I suggest clubgp or w-body.com for advice.

[Raffaelli]

Hate to break it to you bud but a 4.5 is hands down rubbish.

Garbage when they were new and garbage now. $150 is tempting, but its a no-no.

Come on, aluminum block iron heads? The oil sump/ pressure system is a band aid joke, the computer has wayy to many auxilary "features" to try to crack. Its not really that powerful. (155 HP).

And, never ever once seen a cadillac not leak oil....

[2.8 Grand Prix]

Yes I am.

My friend has an '89 Coupe De Ville that does really quite well. The Grand Prix is 400 lbs. lighter too. This is not a car for fuel economy or street racing, this is a "custom" car. I have every intention of making this into a one of a kind Grand Prix.
I just want to know if it will fit. I will do all the work, and I can do some minor modifications if needed. If this will 100% not work, I will drop it. I would really like to do this swap. Thanks!

[robertisaar]

you CANNOT be serious...

those 4.5s were bigger boat anchors than the damn 3800s...

[2.8 Grand Prix]

Hey,
I found a 1990 Cadillac 4.5 V8 with 95k miles. I would really like to put this in my Grand Prix. My question is, will it fit? I looked up the specs on both cars, the Caddy is wider by 1 inch. Is this going to prevent me from doing the swap? It comes with the transmission, harness, and computer, all for $150.
What would I need to do to get this to work?
I think for a "custom" Grand Prix, this would be great. Plus, I'm not finding any 2.8, 3.1, or 3.4 engines around here in my price range with these kind of miles. Any quick response/suggestions/ideas will be apperciated. Thanks!