What turbo ?

[ezrollin]

What turbo are you running on your 3.4 [93-95] engine ? Not looking for a suggestion,just curious as to performance with a given turbo.

[Guest]

GT42R.

[timg]

This is a DOHC, but I'm running a 60 trim T04E compressor with a P trim turbine in a tangential T4 housing (either 0.58 or 0.68 a/r). It's laggy with a smaller exhaust, but with 3" exhaust, it spools very nicely. The compressor side of this turbo is comparable to a that of the GT3076R and GT3776. The turbine side is very much like that of the GT37.

I have a dual ball bearing PT67 that will replace it. The new turbo swaps to a ball bearing center housing and MUCH larger compressor (same turbine though).

One of the DOHC guys has used a GT3071R with great results.

Anything from a GT3071R to a GT4088R would work well for you. The GT3071R should spool very quickly. I would expect a fair amount of lag from the GT4088R. The best middle man might be either the GT3076R or the GT3582R.

Tim

[ezrollin]

Thanks,I'm looking for 400 hp from a basically stock 3.4[93-95]. I got the "max boost" book and have been reading articles online,so I'm starting to be more knowledgeable.

[sharkey]

i dont think your gonna get there on a stock motor. you will likley end up breaking a piston above 10-12psi. you will likley need a better cam and some headwork aswell to achive it

[boostedrs]

id say go for a T04E as well i run one on my 3.1L mine is a 57 trim with ar's of .63/.50 with 4:10 gears i spool by 2,500 rpms in first gear with full boost by 3,100,the turbo is capable of just over 475hp.
edit
i run a t3/t4 hybrid so my hotside is a t3 .63 ar

[ezrollin]

i dont think your gonna get there on a stock motor. you will likley end up breaking a piston above 10-12psi. you will likley need a better cam and some headwork aswell to achive it

Well,stock other than forged pistons and block/head prep.Actually stock cams do well with turbos. Boostedrs,reading your post of mid 12's is what got me interested in doing a turbo,good luck with your new project!