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09-30-2013, 12:31 AM #1
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How much can the heads be milled safely
With a smaller cam (cc502). How much can be milled from the heads safely without any valve to piston problems?
99 FRC C5 - cam/bolt on's - 400rwhp
93 Z28 - bolt on's - not enough rwhp
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09-30-2013, 06:09 AM #2
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As little as possible! You should not be milling the heads for the purpose of reducing the CC size - ONLY to keep the head faces perfectly smooth. .005" is common.
What are you trying to accomplish, exactly?-Joe-
95 T/A.
Advanced Induction 383 - 10.81 @ 124.16, 1.43 60' Video of 10-second pass - 455whp/445wtq
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09-30-2013, 08:08 AM #3
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I've gone .020 without any problems. I think I've heard .030 to be the limit before you'll require intake mating problems.
1995 TA: Converted Nose...381 LT1...4L80E...Moser 12 bolt...Edge TC...
Best 1/4 10.71 @126, 1.46 60ft, 3450lbs
http://www.youtube.com/user/MysteryBird1?feature=watch
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09-30-2013, 08:09 AM #4
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You will run into intake fitment problems LONG before you run into PTV problems.
You can mill .020" and then use a thinner Victor Reinz 5898 head gasket on the stock short block and "usually" still have the intake fit with no problem. If anything you might have to use a dremel and slot the intake bolt holes inward to keep intake bolts from digging into the inside of bolt hole on intake manifold.
Lloyd
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09-30-2013, 10:31 PM #5
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Thanks for the replies.
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