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Generation III Internal Engine
milling heads?

Generation III Internal Engine 1997-2006 LS1 | LS6

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milling heads?

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Old

Aug 3, 2009 | 08:42 PM

#1

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milling heads?

I have a '04 silverado VHO with a LQ9 6.0, The stock 317 heads are 72cc giving it a 10:1 compression ratio, I have to pull the heads off to get broken header bolts out, So while there off Does anyone know how much I can have milled off the heads without causing valve clearence issues?

The truck has a TSP 233/239 .598/.603 lift

TIA James

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Aug 3, 2009 | 10:53 PM

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From: toronto ontario canada

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just get some 243 or 241's. you should be pretty happy with aether one of them.

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Aug 3, 2009 | 11:27 PM

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Safe .0001 that helps some but usually you want the deck milled to match the cam specs

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Aug 3, 2009 | 11:28 PM

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I'm not looking to spend money on new heads right now, the 243's dont flow much more than the 317's and i can have them milled for $50

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Aug 4, 2009 | 04:00 PM

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Sales4@Texas-Speed

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For a stock head I would not mill more than .020" off of them.

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