KleanKustoms

Ok, so I'll have my heads in this week and hooefully get them off to be milled in a week or two, but as I'm doing some last minute checking I want to know if I will see any benefits from milling the heads .030 and using a .040 thickness head gasket, or would it be the same for me to mill the heads .022 and run a stock .051 thick gasket, I know if I mill .030 and use the .040 gasket my cr will be around 9:9:1 and if I milled .022 and use a .052 gasket I'll be closer to stock compression 9:5:1. What's better and where would I see more output hp and or tq wise?

Also, plan on doing my own polishing and maybe porting the heads for a little better flow, don't know if that will come into play at all.

Thanks.

1FastBrick

iTrader: (17)

Would help to know your goals to really make a recommendation. Also what motor are you putting them on???

9.9:1 would be a better NA application and cam will respond better to more compression and a tight quench.

KleanKustoms

Ok, right now the truck is a 05 rcsb 5.3(lm7). The cam I had speced and have for it is 221/221 .575/.575 on 108 lsa. Plan on adding 100 to 150 shot in the future. But nothing more, also will be getting a built trans and 3600-4k stall. Want the truck to show nice gain with the head/cam swap but still would like it to be able to be a DD, and perform nice at the strip if I'd like it to. But mostly for street.

1FastBrick

iTrader: (17)

Let me put this in the Nitrous section and see what people have to say over there.

I believe the higher compression will also work with that set up.