243's on an lq4 how much can i mill them

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09-10-2007 | 12:04 PM

98mysticZ

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From: plano

243's on an lq4 how much can i mill them

i am running an ms4 cam in my ls1 but spun a rod bearing so i got an lq4 how much can i mill these heads using a stock gasket before i run into p/v problems? .649/.610 lift

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09-10-2007 | 12:20 PM

Quik

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Quote:

Originally Posted by 98mysticZ

i am running an ms4 cam in my ls1 but spun a rod bearing so i got an lq4 how much can i mill these heads using a stock gasket before i run into p/v problems? .649/.610 lift

did this similar mock up a little ago. 00 LQ4 +243s +Ms4+ .074 clearance. that was with stock gaskets

compression will be around 10.5

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09-10-2007 | 01:07 PM

98mysticZ

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From: plano

so then how much could i mill the heads and be still safe?

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09-10-2007 | 01:20 PM

1slow01Z71

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You shouldnt mill them at all, thats getting close enough.

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09-10-2007 | 01:55 PM

silver-mod-o

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From: SETx

the most I'd go is a .005 or .010 clean up mill job.... I wouldnt mill them for the sole purpose of gaining compression. like Cody said, they are already getting sketchy...

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