2.8 Turbo.....
Thread Starter
Junior Member
Joined: Jul 2002
Posts: 12
Likes: 0
From: Florence, KY
Car: 1995 Camaro Z28
Engine: 400+ HP LT-1
Transmission: 4L60E
2.8 Turbo.....
No no no.... It's not another post about how many people have one. I've been lurking for awhile now 
I have a single Garrett t-3 Turbo that I got from the junk yard very cheap(put it in my biiiiggg tool box
*wink* ). It puts out 7.5-10 PSI stock.
Aside from the normal issues of the engine being weak as crap, what else will I need to consider before installing this ? I'm just looking for opinions and ideas at this point.
FWIW, the short block is going to be all forged and machined. Having a crank cut custom by a shop I know very well
My wife just wants something a lil faster, and we have an extra 2.8 soooooo...... 
-Shannon

I have a single Garrett t-3 Turbo that I got from the junk yard very cheap(put it in my biiiiggg tool box
*wink* ). It puts out 7.5-10 PSI stock.Aside from the normal issues of the engine being weak as crap, what else will I need to consider before installing this ? I'm just looking for opinions and ideas at this point.
FWIW, the short block is going to be all forged and machined. Having a crank cut custom by a shop I know very well
My wife just wants something a lil faster, and we have an extra 2.8 soooooo...... 
-Shannon
Supreme Member

Joined: Jun 2002
Posts: 4,029
Likes: 6
From: Illinois
Car: 1988 Trans Am
Engine: 305 TPI
Since I don't come around these boards that often anymore, I'll respond to your question. Even though you have a garret T3, it looks worn and beaten up.
First of all, you are going to have to find room to weld it onto your stock manifold, unless you have a custom headers, then weld it onto those. Make sure you mount the turbo so that the maximum amount of exhaust energy cans spin the turbo fins efficiently. You will need a blow off valve, turbo timer, and a custom chip at the least. It would be prefered if you get a camshaft specifically for turbos and superchargers.
The hard part is fabricating and routing the intake pipes in the engine bay. I am assuming that you are using less than 10 psi. You will want a compression ratio stock or less. Higher psi fuel injectors and a heavy duty pump would be a good idea too for adequated fuel deliver under full boost. You will need to upgrade your ignition system to be able to burn the extra amount of fuel and air.
You may want to get a boost guage and a boost controller to maximize the potential. Almost forgot, get an intercooler to reduce detonation, although it is not neccessary with low boost.
I hope your wife loves you because that is not simple or cheap project. It is going to require a lot of work and money. A lot of money. let me repeat that, a lot of money. You might be able to get 260bhp with 10lbs of boost, but you may not be happy with the results after you spent so much time and money on the project.
I hope that helps. I am not trying to steer you away, I'm just telling you what you are going to face so you can reduce those unexpected surprises. Since you already have a turbo, you are one step closer to becoming the first person on this board to have a 2.8l turbocharged F-body. I kind of hoping you will go through with the project because I am tired of hearing people wishing and talking about turbos and they end up not doing anything. I would have dismissed this post, but it sounds like you are serious about it.
By the way, forging the engine components is always a good idea turbocharger or not.
First of all, you are going to have to find room to weld it onto your stock manifold, unless you have a custom headers, then weld it onto those. Make sure you mount the turbo so that the maximum amount of exhaust energy cans spin the turbo fins efficiently. You will need a blow off valve, turbo timer, and a custom chip at the least. It would be prefered if you get a camshaft specifically for turbos and superchargers.
The hard part is fabricating and routing the intake pipes in the engine bay. I am assuming that you are using less than 10 psi. You will want a compression ratio stock or less. Higher psi fuel injectors and a heavy duty pump would be a good idea too for adequated fuel deliver under full boost. You will need to upgrade your ignition system to be able to burn the extra amount of fuel and air.
You may want to get a boost guage and a boost controller to maximize the potential. Almost forgot, get an intercooler to reduce detonation, although it is not neccessary with low boost.
I hope your wife loves you because that is not simple or cheap project. It is going to require a lot of work and money. A lot of money. let me repeat that, a lot of money. You might be able to get 260bhp with 10lbs of boost, but you may not be happy with the results after you spent so much time and money on the project.
I hope that helps. I am not trying to steer you away, I'm just telling you what you are going to face so you can reduce those unexpected surprises. Since you already have a turbo, you are one step closer to becoming the first person on this board to have a 2.8l turbocharged F-body. I kind of hoping you will go through with the project because I am tired of hearing people wishing and talking about turbos and they end up not doing anything. I would have dismissed this post, but it sounds like you are serious about it.
By the way, forging the engine components is always a good idea turbocharger or not.
yea trust me buddy it'll cost ya an arm and perhaps three legs.
i'm going into the turbo idea
only dif i'm a 3.4
good luck!
i have a smaller turbo though
i might go twins
everything said before is pretty accurate
port and polish
bore out your engine
blueprint it.
better intake and exhaust, if you don't have already.
you will need to plan your airflow for maximum efficiency
i'm going into the turbo idea
only dif i'm a 3.4
good luck!
i have a smaller turbo though
i might go twins
everything said before is pretty accurate
port and polish
bore out your engine
blueprint it.
better intake and exhaust, if you don't have already.
you will need to plan your airflow for maximum efficiency
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Thread Starter
Junior Member
Joined: Jul 2002
Posts: 12
Likes: 0
From: Florence, KY
Car: 1995 Camaro Z28
Engine: 400+ HP LT-1
Transmission: 4L60E
Yep, I'm totally aware of the work thats going to have to be poured into this
I'm dead serious, and it's gonna be done. I do have backing from a unnamed machine shop, plus my own connections.
I'm gonna keep track of the costs for the entire thing, and document it thoroughly. Many people pay $250 + for true duals on their 4th gen... I made out with $85
I'm guessing I think about things in another light as most people. I've already done this car from the frame up so far...So she better love me
Lol...
What would be an option for the EPROM ? That is my major concern after I figure out the routing and placement of the exhaust.
Thanks a million guys
-Shannon
I'm dead serious, and it's gonna be done. I do have backing from a unnamed machine shop, plus my own connections.I'm gonna keep track of the costs for the entire thing, and document it thoroughly. Many people pay $250 + for true duals on their 4th gen... I made out with $85
I'm guessing I think about things in another light as most people. I've already done this car from the frame up so far...So she better love me
Lol...What would be an option for the EPROM ? That is my major concern after I figure out the routing and placement of the exhaust.
Thanks a million guys

-Shannon
Thread Starter
Junior Member
Joined: Jul 2002
Posts: 12
Likes: 0
From: Florence, KY
Car: 1995 Camaro Z28
Engine: 400+ HP LT-1
Transmission: 4L60E
Almost forgot, turbo has only about 70k miles on it from a Chrysler New Yorker. It's in good shape all except the rust, etc 
-Shannon

-Shannon
Supreme Member

Joined: Jun 2002
Posts: 4,029
Likes: 6
From: Illinois
Car: 1988 Trans Am
Engine: 305 TPI
Originally posted by C-Dawg
just drop a 2JZ-GTE in there....twin turbo supra engine outta the Mark4's about 300Hp at 13 PSI
just drop a 2JZ-GTE in there....twin turbo supra engine outta the Mark4's about 300Hp at 13 PSI
NOMADz28,
I am glad to hear that you are serious about the turbo. Since you have the backing of a machine shop, you are definately on your way. Keep us update on every detail, problems, successes, etc. Pics would be nice too. I hope your project goes well. I plan on going all motor, but if I can find a place to mount a supercharger, I might do that, but until then, I'll just worry about keeping my engine running. Good luck on the project.
hmm about that eprom. upto about 8psi of boost you should be fine there is actually a timign retard built into the timing table. as for other issues i think youll run out of fuel really fast. btter dig up some 24lb per hr injectors and get ready to wait. i have no eproms or bins to share rht now for injectors this size at the moment. when i do ill gladly post it here. as for timing when i get the 3.1 with a single t3 chrysler turbo runnign ill sort it out pretty quick. i dont have any idea at the moment though of what its gonna need. peace out.
Senior Member

Joined: Oct 2002
Posts: 694
Likes: 0
From: Glasgow Kentucky
Car: 04 Vette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
You might try searching some of the fiero sites there are companies making twin turbo kits for the 2.8 powered fiero maybe one of them could help you with the info and parts you need and I would switch to the 3.1 crank for sure as my 2.8 motors in the past seem to have a weak bottom end that I have not seen or heard of with the 3.1 motors
well i had a 2.8 with a broken crank fall in my lap recently. we did some stress anlysis tests. the 2.8 crank is very flex prone and its a combination of materials desing makes it prone to breakng. the 3.1 crank is made of better quality materials and has just a more robust design with a better balance. so this will be the way the 3.1 turbo project will go with the s-10 were working with.
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