JustinNck1

iTrader: (2)

Hey guys, I have an 04 LM7 5.3 with 706 heads. They are not castech heads, so I am having them worked over, and I was wondering with a 228r cam, how much can I safely mill with PTV clearance issues. .030? Ideally id like to run stock head gaskets.

96capricemgr

iTrader: (1)

Sounds like a lot of duration for a 5.3.

You understand a thinner gasket gets you more compression with the same amount of ptv change?

JustinNck1

iTrader: (2)

Yes, but I figured might as well mill the heads some since they are getting worked. I don't want to go the absolute max amount of milling, just a good safe amount.

spawne32

iTrader: (2)

too much cam IMO

96capricemgr

iTrader: (1)

Can you share more about the application?

You understand displacement affects what duration you should use?

Looks like that cam is available on 112 or 114 which are you considering?

Can you define how the heads are being "worked over"?

JustinNck1

iTrader: (2)

The motor is in a 2wd S10, not a Daily driver, Texas Speed recommended a 112 LSA. Heads are going to our engine builder for a full port and polish. I purchased the PRC double spring kit.

axekick

iTrader: (18)

I think you'll like that cam as long as you have a 3000 or so stall to match.

96capricemgr

iTrader: (1)

Stock cam appreciates more stall than that.

Darth_V8r

iTrader: (4)

I think that can will do ok in a S10. If it were a heavier vehicle, it would be a problem. What rear gear will you run? You will probably want a 3.73 or 4.11 with that set up

JustinNck1

iTrader: (2)

Yeah, I have a 10 bolt built with 3.73s and a locker.

96capricemgr

iTrader: (1)

Which 10bolt? Depending on package most were 7.5" garbage but some were 8.5" but I think that might have been just the offroad package. The 8.5" will handle 9s in the quarter.

JustinNck1

iTrader: (2)

It's actually a 7 5/8s. Had a gov-bomb in it, but now has a locker.

96capricemgr

iTrader: (1)

Whomever came up with the govloc needs a kick in the sack, think it was the same guy who thought socks should be shoe size 6-12.

Address the suspension, don't let it wheelhop.

JustinNck1

iTrader: (2)

Yes, planning on getting Caltracs.