V6 2.8 MPFI swap to a better V6?
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Junior Member
Joined: May 2007
Posts: 36
Likes: 0
From: Chesterton, IN
Car: 1989 Firebird
Engine: 2.8 MPFI v6
Transmission: TH700r4
V6 2.8 MPFI swap to a better V6?
Ok i bought my first Firebird this past February it was a 305 but the guy before me put a 350 into it (and did a crap job on it too) well anyway 2 weeks ago i bought another Firebird same year (1989) for $500. she said it didn't run and i didn't care because it looked good and i thought it might just be a head gasket, because she said it had no compression. had it towed home and the next day i started looking at it and found that there wasn't any anti freeze in the radiator but plenty in the oil so i thought head gasket... to make a long story short it appears she ran it really hot and messed up the cylinder walls, pistons and it looks like the rings got cooked too..... short of a rebuild/ machining there is no hope... the moter is a V6 2.8 MPFI and i haven't heard anything good about them and when looking for a replacement all i found was a rebuild for $1100... so my question is what other options do i have for a V6 that will drop in with out to much screwing around?
BTW this site is amazing! i have already used it a couple times to help figure out things with my other car. Great job guys.
BTW this site is amazing! i have already used it a couple times to help figure out things with my other car. Great job guys.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.
The 2.8's had weak spots. They don't have to be abused to fail. Most likely you have a cracked block, and water got into the oil, the water killed lubrication, and you see the results. The 3.1's fixed those problems. If you can find one of those used, that's one option.
http://www.sdparts.com/product/12363...eAssembly.aspx . Don't worry about their disclaimers, it will work fine under MPFI. Check out the V6 forum for details on what is needed to install it (some things that need to come off the 2.8 and go onto the 3.4).
The 2.8's had weak spots. They don't have to be abused to fail. Most likely you have a cracked block, and water got into the oil, the water killed lubrication, and you see the results. The 3.1's fixed those problems. If you can find one of those used, that's one option.
http://www.sdparts.com/product/12363...eAssembly.aspx . Don't worry about their disclaimers, it will work fine under MPFI. Check out the V6 forum for details on what is needed to install it (some things that need to come off the 2.8 and go onto the 3.4).
Thread Starter
Junior Member
Joined: May 2007
Posts: 36
Likes: 0
From: Chesterton, IN
Car: 1989 Firebird
Engine: 2.8 MPFI v6
Transmission: TH700r4
Re: V6 2.8 MPFI swap to a better V6?
Well thanks,
Ya i had heard that the 3.1 liter engines were better. i will go and check out those forums!! thanks again for the response ~_0
Ya i had heard that the 3.1 liter engines were better. i will go and check out those forums!! thanks again for the response ~_0
Joined: Dec 2002
Posts: 287
Likes: 0
From: Poconos, Pa
Car: 1984 Firebird
Engine: LT1
Transmission: T5
Axle/Gears: 3.42's
Re: V6 2.8 MPFI swap to a better V6?
If you're anywhere close to NE PA, I have a 2.8 that I pulled out for my LT1 swap.. It ran sweet.... Just wanted to throw out an option...
Thread Starter
Junior Member
Joined: May 2007
Posts: 36
Likes: 0
From: Chesterton, IN
Car: 1989 Firebird
Engine: 2.8 MPFI v6
Transmission: TH700r4
Re: V6 2.8 MPFI swap to a better V6?
That would be awesome except that i live in NW Indiana... >.< if you are willing to give a good price it could be a definite possibility... it would most likely have to be shipped seeing as gas keeps going up
Last edited by EricW; Jun 9, 2007 at 12:54 AM. Reason: tired and grammer dont go together so well... i just cleaned it up
Joined: Dec 2002
Posts: 287
Likes: 0
From: Poconos, Pa
Car: 1984 Firebird
Engine: LT1
Transmission: T5
Axle/Gears: 3.42's
Re: V6 2.8 MPFI swap to a better V6?
Yea... that would be a lil of a hike.... to be honest... it probably wouldn't be worth the shipping.. it's only a 2.8...
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Thread Starter
Junior Member
Joined: May 2007
Posts: 36
Likes: 0
From: Chesterton, IN
Car: 1989 Firebird
Engine: 2.8 MPFI v6
Transmission: TH700r4
Re: V6 2.8 MPFI swap to a better V6?
Yeah.... thats ok i think im going to try for a bigger V6 i just dont want to have to get into all the crap that goes with putting a bigger engine in... who knows maybe i can find a 3.8 turbo
Joined: Dec 2002
Posts: 287
Likes: 0
From: Poconos, Pa
Car: 1984 Firebird
Engine: LT1
Transmission: T5
Axle/Gears: 3.42's
Re: V6 2.8 MPFI swap to a better V6?
That's cool... Just keep in mind the biggest you can go to with the stock tranny is a 3.4.
Thread Starter
Junior Member
Joined: May 2007
Posts: 36
Likes: 0
From: Chesterton, IN
Car: 1989 Firebird
Engine: 2.8 MPFI v6
Transmission: TH700r4
Re: V6 2.8 MPFI swap to a better V6?
So if i was able to come pick the engine up what would you be able to let it go for... my friend is going to penn and i might be able to tag along. and if it isnt to far i could come and pick it up. what city are we looking at... my friend is going to the Hawk mountain area... i would have to look up where that is close to. yeah let me know... i just want to get this car running for as little as possible...
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