oOoLy

I want the best heads for my new 382ci ALL-BORE ( LS6 heads or 5.3L truck heads ) which one will gave me more power ?

Thanks
Adnan

LS1 Brent

TTT , I was wondering the same thing.

JPR

Hey Adnan,

My take on it is..

Z06 heads will yeild more flow with less work.
5.3 heads will yeild the same flow but with more work.

Compression is comparable with the same milling specs.

Z06 heads are expensive but cheaper to port to S2's.
5.3 heads are cheap but expensive to port to become on par with S2 Z06 flow numbers. I guess it just depends on either braggin rights or being frugal? But back to your original question, it just depends on how well either of them are ported/milled.

Joe.
(confused myself)

strokedls1

iTrader: (1)

My 5.3's flow about the same as the LS6 heads. They are stage 2, and I am comparing to the numbers that I have seen posted on the board. If you have the money I would just get the LS6 castings though.

oOoLy

Thank you all for your reply....

If it LS6 S2 and 5.3 S2 which one should i get ?

2000RATA

Joe,
How are your 5.3 mid lift numbers compared to your LS6 mid lift numbers?
Chris

Ragtop 99

iTrader: (7)

you can probably get the extra compression from your new pistons, thereby negating the 5.3's big advantage, so I'd do LS6. Also you're going with a high lift cam and the LS6 heads seem to work well with higher lift cams.