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12-02-2012
Iv been reading a lot about supercharger pulleys on the forums but cant decide what the best route is to take. Should i get a 3.4" pulley with new plugs, ubend delete, intake, thermostat, pcm, and down pipe? or should i get a 3.25" pulley with all of the above plus new headers and will that be safe to do?
12-02-2012
get the 3.4. get headers with it. anything below will require more modding.
12-02-2012
Definitely 3.4
12-02-2012
Read up more on modding before you buy anything.
Sounds like you are going off of what ZZP says for this information.
Exhaust first, then add air. While scanning the whole time.
12-02-2012
I meant 3.4 with headers
12-02-2012
Isn't the safely modding thread required reading?
if not. it SHOULD BE. this is all addressed in that thread. read, absorb...
...then ignore it anyways like most people...
12-02-2012
You can usually find headers for a little more or same as DP. Might as well get headers, and have a better flow.
12-02-2012
okay thanks. I will most likely go with a 3.4 and just get headers when i can. after this what should i do besides going with a smaller pulley. what else can i do to gain power?
12-02-2012
Headers first. One of the biggest restrictions for these engines is the exhaust manifolds. Need more exhaust out before you can add more in. And for power gain.... it all depends on what you want to do, and how deep your pockets are. Anything outside of 3.4" you are talking cam and so on. So the price to safely and effectively run more mods after 3.4" goes up quickly.
12-02-2012
1.9 rockers are cheap
or intercool it...
or both..... all depends on how mch mony you have
12-02-2012
Read the modding thread in the general tech section.
12-02-2012
ok ill check out the modding thread. if i got a 3.4" pulley and did all of the supporting mods including headers and an intake what kind of torque/hp gains can be expected?
12-02-2012
from what ive seen...youll have 230-245 whp with a good tune.
12-02-2012
did u mean 330-345hp?
12-02-2012
no.Originally Posted by Slideways22
12-02-2012
That kind of power isn't easy with a supercharger
12-02-2012
stock gtp comes with 250 at least.. did u mean 230 additional hp?
12-02-2012
250 crank hp..... ~200 wheel horse power. And no.... maybe 30-45 additional hp on top of the factory wheel depending on certain factors.
So say ~230whp on the bottom side.
12-02-2012
From the factory the Grand Prix GTP (97-03) have 240 Horsepower and 280 FT LBS Torque.
Minus the drivetrain loss and your at 200/250 to the wheels.
Do those mods for a 3.4 setup and you might be 230/280-290 to the wheels.
12-02-2012
nope, i only meant that right now you make about 240 at the crank. maybe. so that means about 190-195 to the wheels.
with a 3.4 pulley and supporting mods, you will make about 230-240 to the wheels. so that means about 280 to the crank.
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