hi all im working on a project car that has a fwd 231 that will accept almost anything from the gns. well what i would like to know is if i have gn iron heads ported and polish and forged pistons what hydro roller camshaft and valve springs should i get to make around 400-450hp with a max of 20psi. running no alky but not out of the question though.
help me make some decisions
- Thread starter wiskyfan
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fastblackracing
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- Apr 7, 2009
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I am a big fan of the 206 206 roller from weber racing. No downsides and made good usable power for a driver. With 941 springs from comp cams I was able to go way deep in the tens with this set up. What are you using for a turbo and innercooler?
thanks guys for the advice and for the Turbo size idk yet and I do planing running air to air intercooler.
this fwd engine is going in to a fiero so it need to be a fwd unless I Want to cut my trunk out and use a rwd engine placed longitudinally...sound like alot of work
so for transmissions I'm limited to the auto that comes with grand prixs gtp. the f23 five speed from a cavalier or the 6 speed from the g6 and all have held over 500 HP with some persuasion 
. what is a good Turbo size for the 3.8 around 400-450.
this fwd engine is going in to a fiero so it need to be a fwd unless I Want to cut my trunk out and use a rwd engine placed longitudinally...sound like alot of work
so for transmissions I'm limited to the auto that comes with grand prixs gtp. the f23 five speed from a cavalier or the 6 speed from the g6 and all have held over 500 HP with some persuasion . what is a good Turbo size for the 3.8 around 400-450.thanks guys for the advice and for the Turbo size idk yet and I do planing running air to air intercooler.
this fwd engine is going in to a fiero so it need to be a fwd unless I Want to cut my trunk out and use a rwd engine placed longitudinally...sound like alot of work
Ok, that gives a lot of clearity on your goals. As far as the turbo choices, you have a broad choice of old and new tech. Journal or bb, etc. However, not knowing the gear ratios of the trans, tire dia, and convertor choices, may make a differance in the cam/turbo combo choice. Can you fill us in on the gearing and tire size. Bison might be more informed about those specs, and may be better able to give a killer choice.
