Problem shopping for performance parts

**Cableguy** · 10-08-2008

I've been shopping for cams, new heads, and a dual exhaust kit from the headers back but I am having a hard time shopping around for the best bang for my buck. Does anyone have some sites to suggest or parts? I'm pretty new to this so the specs are driving me crazy. I've tried jegs but it was difficult to find the right stuff made for my car. And jcwhitney didnt have a lot to choose from. But like I said I'm aiming for dual exhaust including the headers back, new performance heads, cams, and probably some ignition stuff. Any help would be great. Thanks!

Edit: Or if someone can recommend a good speed shop in south jersey that would be awesome.

**Street Wolf** · 10-08-2008

INTENSE-Racing.com

https://www.zzperformance.com/

Welcome to PRJ.Performance

Those are the only three 3800 related websites you really need to know for performance products. The rest just don't really cut it.

PFYC

PFYC has a lot of good things as well. Performance wise and exterior/interior stuff.

**Cableguy** · 10-08-2008

Sorry I forgot to mention I drive a GXP with the LS4 motor. Should I build on this motor or buy a crate performance motor? It seems cheaper to get a performance motor (and easier I dont feel like doing the crank and pistions lol). Plus I recieved info that my tranny is going to be my worst enemy. Please point me in the right direction. Its been about a week of researching and I cant seem to figure out crap. I've joined 3 gp sites and pm'd others with gxp's but nobody knows nuffin!

**blowfishRus6** · 10-08-2008

its a chevy motor. well gm motor, how ever you wanna see it. go check summit for cams for the ls4, it doesent matter what vehicle its in cams will work. a cam really wakes up lsx motors too.

your tranny problew wont last to long tho once you go that route. your gonna want a built tranny. i dont know if tranny man does those trannies but im sure he can.

**Injun #4** · 10-09-2008

Hi, Keith. Not much available for these motors. You definitely want to go with a CAI, or FWI and the Magnaflow catback. From what I've heard, if you decide to put a different cam in, you will also have to change the lifters which will dissable your active fuel management.

As much as I love these forums, it would appear that the best information regarding performance mods for the GXP is going to be found in the LS4 section of LS1tech.com

**blowfishRus6** · 10-09-2008

agree. there is a very select few members on here that have gxp's

**Cableguy** · 10-10-2008

Thanks for the info guys. I dont mind the fuel management not working. I read that changing the cam and heads is a 100+ hp gain. I'm gonna have to go that route after I get my exhaust finished. I'll check out ls1tech for more info.

**blowfishRus6** · 10-10-2008

there you go. good luck!!!

**Injun #4** · 10-10-2008

Originally Posted by Cableguy

Thanks for the info guys. I dont mind the fuel management not working. I read that changing the cam and heads is a 100+ hp gain. I'm gonna have to go that route after I get my exhaust finished. I'll check out ls1tech for more info.

Be sure to keep us posted as to how it turns out.

**blowfishRus6** · 10-11-2008

yes please do!!! i would like to see how it responds with those mods.

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