hello, i am wondering how much gain if any would you get replacing your heads,

I have supercharge 6.0liter gm and i talk to different engine builders locally and on net and i received different answers.

I have radix intercooler supercharger and was thinking of adding on afr 205 mongoose heads, i have added snow performance kit, wester tune, headers, exhaust, I would like proven dyn numbers if anyone has proof is the heads will make a differences

thanks you for your information

s

 

if your doing the heads you'd get the most out of them by getting a cam as well. You can realize a good increase in power with the right combo while still driving around with stock characteristics. Richard from WCCH has an excellent combo that yields great results!

 

i second richard, he can tell what to do with the heads you have now,
or he has a set of heads that will put you right where you need to be.

 

yes, however, I do not want to change my cams, i am wondering espeically with a supercharge engine will upgrading the head will dramaticlly add anything or basisly is it worth the investments if you do not plan to upgrade the cams.

 

Dude, pay attention to what you were just told. Yeah, the AFR's are sick heads but without a blower cam it's not worth doing them, alone. Whether or not you buy WCCH's you'll still want a cam.
So, your answer is, NO. No point in allowing for better flowing heads without a good blower cam.

 

If your only changing the heads and nothing else I would assume the only thing you'd have to gain out of it are lower IAT's which might gain you a very small amout of hp. New Heads will allow your blower to do the same job easier but your blower won't be putting more air in, just the same amount at lower psi. You'd need to change the cam like the rest of the guys are saying. And pulley down if you wanna keep the same boost pressures.

 

You know it's easier to change cams than heads right?

 

Gains with heads on a forced induction setup will be minimal at best unless you are going for extreme power. Your best bet for the biggest gain would be going with a cam and skipping on the heads.

 

i been told that if you change the cams, your driveability goes to sh*t, and you wont be able to pass IM. I want to keep my driveability as well pass the IM test.

 

BINGO!