Piston clearance

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Aug 6, 2007 | 03:27 PM

2000KnightRider

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From: AZ

Piston clearance

I have a set of stock LS6 heads that have been milled .015 and stock head gaskets. I was talking to my friend yesterday and he said that my pistons might hit my valves with my heads being milled like they are. Is this true?

Aug 6, 2007 | 03:51 PM

Blck_01ss

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From: Houston Tx.

Yeah, you're screwed

Aug 6, 2007 | 04:35 PM

Trev_SS

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not with the stock cam they will not hit, if you get a big enough cam they will more than likely hit

Aug 7, 2007 | 07:57 AM

2000KnightRider

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So what size gaskets would I need to get? .015 bigger than stock?

Aug 7, 2007 | 11:03 AM

JPH

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From: Fort Wayne, IN

how big is the cam going to be?

Aug 7, 2007 | 11:04 AM

2000KnightRider

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232/234 .595/.598 112 Lsa

Ive got the heads milled .015 and if so I will probably get custom gaskets. Does Felpro make them and what size would I need? Would I need custom PR's as well? Ive got 7.4s.

Last edited by 2000KnightRider; Aug 7, 2007 at 11:20 AM.

Aug 7, 2007 | 11:36 AM

JPH

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what's the ICL? it will clear but clearance will be close.

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Aug 7, 2007 | 01:16 PM

Jon@Texas-Speed

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You should be fine with that cam. It is our Torquer v.2 camshaft. We have installed them with more than .015" milled off the heads. Just use another set of GM gaskets when you put the heads on. As always, it never hurts to check PTV but I would doubt there would be a problem.

Aug 7, 2007 | 01:46 PM

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QuickdomesticRacer

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From: Toledo, OH

I had a similar problem. .591/.601 w/ milled heads. Not sure how much they have been shaved, but they were stock 69CC chambers and are now about 57CC, is there a formula to calculate how much has been shaved?

That cam I got is installed -4, and it just did hit the pistons, just so you could see where they may have momentarily made contact.

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