Thread: Semi turbo on grand prix gt?

Alright so I got to talking to my friend about turbo ing my 2001 grand prix gt. he said he can get me a turbo from a semi truck for $100. And he said is friend has done it and works good and he can put it in for me! But I might have to get different headers and then tune and get a dyno of it. Is this possible and safe for my car? I have 100,000 miles on it and it's in good shape just slight oil leak. Would it work from the same as a normal turbo?

ran one for years, made more power than 99.9% of the people that build "fast" cars on this site.

How much hp did it make?

Originally Posted by Kcgp

How much hp did it make?

125+ trap speeds, so idk, 430whp? I spent less than $500 putting it together.

Wouldn't that make the transmission go kablooey?

Damn alright I'm doing it haha what all supporting mods do I need? And so total you'd have around 325hp?!

Originally Posted by Kcgp

Damn alright I'm doing it haha what all supporting mods do I need? And so total you'd have around 325hp?!

Well, a built transmission for one...

So I'd have to get a new transmission too?

Or beef up the current one...I know nothing about tranny's though...I've never even BEEN to Thailand...

Yeah I'm only wanting to spend tops 1000

It's a GT, so wouldn't he also need exhaust upgrades like the top-swap guys have to do?

cheap injectors and a cheap walbro fuel setup will do 375whp pretty easily.... $200 there.
wastegate/bov/intercooler/install kit will run you about $300 on ebay prices.
A wideband is a good idea, not needed.
I ran a bone stock trans in a lighter car running really low 11s, so you really dont need a trans if you are not a stupid asshole that doesnt know how to drive a car making power.
Tuning is cheap, and you dont really need to even tune anything if you keep the whp under 375 (17psi) and run on a stock LT1 maf.

ghetto turbo kits have been done often, on stock transmissions... they work fine and are really easy to do.

Originally Posted by txslow6

Bull**** on the $200 for injectors and a fuel pump. I'm calling you out on that. There's no way in hell you will find that new at that cost. Post the links to these. Your trans comment again bull****. Why because its not going in a Fiero its going in a piggy and I don't give a **** how it drives it the trans is going to go out. People have GTP's with stock trans go out all the time and they don't make near enough power a turbo will. How in the hell do you think that he won't eventually need a built one or a replacement is bull****.

walbro = $60 42s = $120. I never said these were new parts for the fuel system... he asked if he could do it on that budget and I said it was more than possible. Hell new injectors are $210 high retail and a walbro is $80... so $300 for a fuel system woah look out.

Transmissions last alot longer than the internet says they do, I know because I have done it in fieros, gtps, bonnevilles.....

A seasoned owner with a lot of spare parts and the right resources could do this for potentially under $1,000 but you have to be more realistic.

Probably true, but it still doesnt make it impossible... I did cheap crap back when I was unemployed reformatting computers once a week without any prior experience... and that was when ebay didnt carry hardly anything turbo or 3800 related. The major issue about not having piles of spare parts and experience means you will probably have your car down whilest building it for a signficant period of time, which is usually a huge deal to the kids that want to do these things.