crz28

My camaro lt1 made 365rwhp on full bolt ons and a cc306 cam, i'm taking the heads off to have them ported also the tb , my question is what kind of hp gains can i expect from these job.

ZONES89RS

iTrader: (25)

Depending on who does them, how they do them and what you tell them you want from them, total with a valve upgrade full port and polish i have seen 40hp or more depending on the heads.

lt197formula

iTrader: (6)

Don't forget to have the intake manifold ported for the throttle body and the runners port matched to the heads. If all that is done along with a good port job on the heads, larger valves you should around 35-40rwhp.

These numbers are for an m6 which I'm guessing you are, if you are an a4 then around 10 or so less.

I had my stockers ported, larger valves, runners slightly ported and gained around 30rwhp over some slightly ported heads. Then did a 58mm, ported intake manifold, more porting on the runners, 30lb injectors, retune and gained almost 15rwhp...and I'm using the same cam.

speed_demon24

iTrader: (6)

Anywhere from 0-60rwhp.