ScreaminBird99

iTrader: (6)

I have a 99 ls1 firebird, m6 full bolt ons, my intake is still ls6, 224r cam, cam and full bolt ons it dynoed 383 and 372 on a mustang dyno, since that i have added prc stage 2.5 5.3 heads, miled to 59 cc and true duals off the headers dumped before the axle... this dyno will be a dynojet, what does everyone think

PewterScreaminMach

iTrader: (7)

Well, going to the dynojet alone may put you close to 400, then the heads and duals might put you at 420-430? I'm gonna say 425/397, just to throw some numbers out there.

ScreaminBird99

iTrader: (6)

i see, i guess i was hoping for a little more as th eheads do advertise 40-50 horse gains, lets go SPEED INC!! lol

ELMiN8oR

My guess will be 420 rwhp 390 rwtq