Its on a 2002 trans am non ws6. And it would be with these 3 mods:

SLP lid
Kooks LT headers with catted y-pipe
GMMG exhaust, or true duals.

Any idea of how much power it will increase and then the ending number of the power level. i.e 320rwhp 325rwhp?

Thanks.

 

people read but anyone know?

 

About 335-340rwhp with those mods.

 

A friend of mine has an '02 Z28 with longtubes/ory/flowmaster and the stock lid put down 360 rwph. Either he has a freak or you are lowballing.

OP I would say you would be about 360 or so from my experiences.

 

360rwhp without full bolt ons is a happy *** dyno unless the car is trapping high enough to back it up, but with stock lid and a flowmaster catback I don't see it happening at all

dyno numbers =

 

Not to jump the ad but what about mine 98 z28 auto flp lt ory no cats , slp lid ,Bottom tray mod with k&n fitler, Descreened maf and smooth elbow and slp lm1 and it has a rear gear

 

no biggie.

 

x165389!