270rwhp realistic?

WhiteDevil69 · May 13, 2004

Alrighty, gotta 03 GT with the mods below, putting in my U/D pulleys tonight... Next two mods will be VT custom ground blower cams from tim, Mac LT's and then a MAF and 30lb injectors...basicly im looking to see where ill be after this, im trying to get my car to about 290rwhp to hold me over til i can get the blower and forged internals..wanna be able to beat a lightly modded ls1 at least.. So will these basics get me to 270 or am i still gonna be short? The other option i was considering was the Patriot heads with the same cams..anyone have any experiance with these heads on the 99+ gt's?

StangerZipper · May 13, 2004

Definetly go with the PI heads and VT cams.. also if you changed out your stock intake manifold.. you'll definetly see 100+ hp to the wheels guaranteed.

StangerZipper · May 13, 2004

YES ITS REALISTIC

StangerZipper · May 13, 2004

YES ITS REALISTIC..... good luck

WhiteDevil69 · May 13, 2004

StangerZipper said:
YES ITS REALISTIC..... good luck

how much did you pay for the leather 03 GT seats, might be selling mine down the road and dont have any idea where to start pricing them

StangerZipper · May 13, 2004

WhiteDevil69 said:
how much did you pay for the leather 03 GT seats, might be selling mine down the road and dont have any idea where to start pricing them

they cost me $600 but that was through somebody....
im sure they are selling them well over 1000 at the dealership possibly 1500.
Call your local dealership and ask... my best bet

StangLou · May 13, 2004

Its very realistic. Im at 266 with no cam, tb/plenum work. Id love to hear a sound clip if you can get one up once the install is done

mustang35thann · May 13, 2004

N/A you WON'T see 100+ RWHP. I went with SHM Stage 1 P/P heads and their Hot Street/Strip Cam. I also went with 42# injectors. 30# would have been plenty, but later down the road if I build the bottom end of the motor to have a mean N/A car or if I add a s/c I won't have to go back and change them. Anyway, with a Superchipc custom tune I ended up with 56 RWHP and 13 RWTQ. I was expecting a lot more as well but it was explained to me that the displacement of our motors is holding me back. Now if I change to a different piston that isn't dished or if I put a blower on there the gains will be significantly increased.

As for performance mods (add Hp/TQ), here is what I have besides the heads/cam package:
Pro-M 80mm MAF
Accufab 75mm TB
C&L Plenum
BBK Long Tube headers
BBK off road H-pipe
Bullet flow through mufflers
SCT performance chip.
Steeda U/D pulleys

I'm also running 4.10's for gears which actually reduces the numbers being shown on the dyno because of higher friction.

Hope this helps and if you have any questions please feel free to ask.

WhiteDevil69 · May 13, 2004

mustang35thann said:
N/A you WON'T see 100+ RWHP. I went with SHM Stage 1 P/P heads and their Hot Street/Strip Cam. I also went with 42# injectors. 30# would have been plenty, but later down the road if I build the bottom end of the motor to have a mean N/A car or if I add a s/c I won't have to go back and change them. Anyway, with a Superchipc custom tune I ended up with 56 RWHP and 13 RWTQ. I was expecting a lot more as well but it was explained to me that the displacement of our motors is holding me back. Now if I change to a different piston that isn't dished or if I put a blower on there the gains will be significantly increased.

As for performance mods (add Hp/TQ), here is what I have besides the heads/cam package:
Pro-M 80mm MAF
Accufab 75mm TB
C&L Plenum
BBK Long Tube headers
BBK off road H-pipe
Bullet flow through mufflers
SCT performance chip.
Steeda U/D pulleys

I'm also running 4.10's for gears which actually reduces the numbers being shown on the dyno because of higher friction.

Hope this helps and if you have any questions please feel free to ask.

I agree, but i think with some stage III+ heads and cams with a good quality intake, a streetable tune, and the normal boltons i believe you could! I am predicting a 350+rwhp NA 2v GT real soon!

StangerZipper · May 13, 2004

ok 90 - 100 hp... its been done bfore

03-s281 · May 13, 2004

WhiteDevil69 said:
I agree, but i think with some stage III+ heads and cams with a good quality intake, a streetable tune, and the normal boltons i believe you could! I am predicting a 350+rwhp NA 2v GT real soon!

Good luck. The most I've seen is 330rwhp with everything done to it.
Bottom end, heads, cams, intake, LT's, o/r, the works.

GreekStang85 · May 13, 2004

I hate the fact that our GT's cant make it over 340hp NA ........i would love to have 420 hp all motor just like my friends 95 camaro that has a 383 stroker.

GinoGT · May 13, 2004

Don't bother with a MAF, it's a sensor, not a performance part. Upgrade it when you peg the stock one. Which on an N/A car, isn't going to happen.

Doing 350RWHP N/A is going to take A LOT of money. You would definately need a high compression, forged bottom end because you'll need lots of RPM's to make that kind of power. Not to mention h/c/i to handle that.

I think to get those kind of peak numbers, you're going to sacrifice the low end.

One of the biggest problems with the design of the modular engines is the small bore and how it shrouds the valves.

WhiteDevil69 · May 13, 2004

GreekStang85 said:
I hate the fact that our GT's cant make it over 340hp NA ........i would love to have 420 hp all motor just like my friends 95 camaro that has a 383 stroker.

Patience my friends, they haven't even developed an intake worth using for our motor yet, i think within a few months there will be one that might help with this. I dont plan on going this route, but i think someone will! As for me, i just wanna go to about 270-290rwhp

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