CaptUSA

iTrader: (5)

Hey guys. Do you think I could squeeze 40rwhp out of a set of Z06 heads w/ my current mods?

Daily drivability, price, power are how I'm placing my criteria. I know I'll always be leaving something on the table, but I love an OE feel.

Any input would be appreciated.

LS1>girlfriend

iTrader: (19)

ported 243's...no. stock 243's....no.

Pythias

iTrader: (3)

Maybe with a custom cam

hammertime

iTrader: (1)

AFR 205's are one of the best heads out there, and they are advertising a 40 hp gain. Don't expect a realistic 40 hp from LS6 heads, ported or not.

Krab

iTrader: (28)

Not 40rwhp, but maybe ~20rwhp once it's tuned. I'd expect more if you had a set of long tubes, no cats, a better flowing catback, ported throttle body and an UD pulley. In other words, full bolt-ons and I'd expect a higher gain.

2 SSlow

iTrader: (26)

just bolting on 243's...Nope.

sidewayz28

iTrader: (24)

i bolted on 243s + a 90/90 to my bolt on 232/234 .595/.598 cam and im sure i gained a little more then 20+. but to answer your question no i dont think 40 is obtainable

GuitsBoy

iTrader: (4)

A good set of ported LS6 heads and a proper tune might get you 30 or 35, but 40 is really stretching it. Might happen if your car as detuned for the baseline.

CaptUSA

iTrader: (5)

Reality check cashed.

Thanks guys. I was just hoping against hope 20 more hp wouldn't cost me so much. How come it gets more expensive the further we go?

Take me from 373rwhp to 400rwhp? So... **counting fingers** 27hp workable? I think my head'll explode if I dyno it and come in @ 399.4rwhp!!

sidewayz28

iTrader: (24)

i think the 243s are a great upgrade from 241 heads.. there nothing radical, but its a great B U D G E T head

Asmodeus

going to 243's from 853's has got to be a 15-20rwhp gain, I don't see how a good port and valve job isn't worth another 20.

orangeapeel

iTrader: (18)

The TFS heads might yield something near 40. It is gonna take a bad *** set to make near that though.

bjamick

iTrader: (31)

get the ported LS6 heads from TSP their pretty cheap anyways. I have seen some great results from those heads and their a 243 casting.