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need some suggestions [Archive] - StangBangerz Forums
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blue lx
02-09-2011, 10:57 PM
just got my first 4.6 in a 98 gt looking to do some upgrades but dont no where to start need some help:confused:
Jake
02-09-2011, 10:59 PM
a budget would be good. :D and maybe your goals for the car.
bobtsgt
02-09-2011, 11:10 PM
mod motors are like most others. Some nice long tubes, a PI swap, free flowing exhaust and a gear in the back will be a good start. Follow it up with some tuning to get everything playing nicely with each other.
blue lx
02-09-2011, 11:18 PM
What does a pi swap consist of, I was told it has a gear my speed is off by 25 MPH at 65 my speedometer reads 90
Dirtyd0g
02-09-2011, 11:31 PM
Most people put PI heads on the NPI motor for it's compression gain, use the PI intake and cams as well.
Alan
HawksWR37
02-11-2011, 06:56 PM
The heads also flow better. That should be your first major upgrade on a npi motor. you could throw a nice set of cams in there while you have it apart too. then all the bolt ons and then a turbo :)
bobtsgt
02-12-2011, 12:15 PM
even if you just did the PI cams and intake you will notice quite bump in power. The NPI heads have a more restricted exhaust flow but a slightly better flow then the PI. Start looking over on modularfords.com for more ideas.
Dirtyd0g
02-12-2011, 01:22 PM
The PI to NPI debate is a big one, the advantage I see on a budget is you can find a good condition set of PI heads still, NPI's will almost always need rebuilt. NPI you have to have 96+ or you cannot do anythign good with the cams (except old model comps and a custom grind) the exhaust retainer will bottom out at even stock PI cam lift. If budget isn't the issue go Trick Flows and forget about stock heads.
Alan