is about 325 hp way out of the question for a gtp i know its possible i mean anything is pretty much ive seen zzps gtp on you tube but what would u all need to do to the gtp to get it running that

intercooler and small pulley would probably get you close. You talking at the crank or wheels?

Intercooler, small pulley, headers cam and probably a few others I'm forgetting.

Too keep it reliable.

Of course a hundred shot of NOS would be the quick way.

The problem is the trans was never designed to hold up to that much oomph.

so basically 100% exhaust job and intercooler and smaller puller and supports is it?

Pretty much. You don't need 100% exhaust. Stock catback is fine, just replace stock manifolds and downpipe with headers and you're good to go.

This is an old out of date chart, but might give you some ideas, there's many different paths. http://www.clubgp.com/newforum/tm.asp?m=5178946&p=1&tmode=1&smode=1 It looks like you'll need to dump the stock cam to 325+ HP at the wheels.

what is the best exhaust cause if anything id like just all new exhaust to have it out of the way for future mods and i was just wondering what is the best sounding exhaust i have done alot of youtubing and ive noticed 3800s arnt the best sounding engine but there are a few i liked. what im looking for is a little bit louder then stock and i would like it deeper with no rasp or whatever its called so basically a bit musclish but no where near ricey( i dont like the sound or look of fartcans and im sure you guys dont either)

Sorry but the best sounding exhaust on these is either stock or a radical cam. Otherwise your SOL.

Besides while it maybe ugly the stock cat-back isn't all that restrictive and flows plenty for motors in excess of 500hp.

Your better off spending your money on the cat-forward.

I spoke to an exhaust guy about a month ago. He had STRONGLY suggested the magnaflow exhausts for these engines. Otherwise, some kind of header or ported manifold, u-bend delete, high-flow cat, and some nice tips. After that, you're pretty much done.

thanks and i guess i have noticed alot of magnaflow on gps anyone else have any opinions? o and which cai gives thehighest hp gain i would rather have a cai over a fwi and stuff and i know k&n gives like 13.34 or something like that and others that give more tho?

cheers, homie. Glad I could be of help.

They are all about the same. No one has ever done comparison runs between all the options available. I'd put money on it that any CAI that uses a 9" cone will net the same results regardless of the make.

There's just too many variables. You won't go wrong with any of them.

I still say stock exhaust is the best. Sure it'll sound good at idle but once you get into the RPMs they all have that icky nasty rasp sound and the drone in the cabin gets old after a while.

i like stock ijust want it a little bit deeper and a bit louder cause my dad has a 68 chevelle and i love absolutely love the sound of it now i know a gp will never sound like that but i just want a hint of muscle like it and a bit louder and no rasp is tat possible?

Only one I ever heard that sounded anywhere near what your after had a radicle cam in it. Otherwise your chasing the great white buffalo.

wait does the actual exhaust have much to do with it or is it more the cams

more so the cam, but to an extent, both. I know, not much of an answer, and I'm sorry, but that's the nature of these cars.