Pontiac Grand Prix Forums : Grandprix

I currently own a stock 00 gt coupe, I was wonderin what upgrades could significantly improve my bhp or is it best to upgrade to a gtp?

Buy a GTP, Turbo It, or Top Swap! If you don't want to spend that much then FWI, DP, 1 step colder plugs, er ratio rockers, ZZP HVTB, HV3 insert, water underdrive pulley, reprogram PCM should make the car a little more responsive and improve your bhp.

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debadged, clear corners, 20% tint, tinted tails, vibrant performance tips, red painted calipers, Fig. grills, autometer guages, PFYC 3 pod A pillar, SLP CAI, 2.5" DP, SD Hood, SD front air damn, Gen I spoiler, 17X8 Borbet Type M rims, engine upgrades soon!
My Cardomain

Just top swap it, and get supporting mods

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99 GT- L36:GenV:N*:1.9 rollers:Pacesetters:slp catback:3ep trans:Intense Input shaft:stock pulley
BPC member

Why do you have a GXP in your avatar? lol

i own a gxp and several other cars, in fact I like to fool with cars just to upgrade them to a more respectable overall vehicle

if i were to buy a used s/c of a totaled gtp what other upgrades would i need to make my engine and tranny capable of handling the additional tourque, and what would that with a 3/4 pulley, k&N air intake and a flowmaster bring my bhp to about?

You'd need either ZZP's SS M90 kit or the heads, LIM, TB, crank pulley, idler pulleys, coil pack bracket, etc from a supercharged car.

If you put a supercharger on a non-supercharged car with 3.4 and only mufflers and a K&N intake you will blow it up. You need a lot more supporting mods than that to run the stock pulley safely on a L36 short block, and even more to run a 3.4.

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2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI

NAIOA moderator Still Imp'n, just in a different Imp.

Stickers. Lots and Lots of stickers. Each one, MINIMUM 5 HP gain.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire