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#1
07-07-2004, 01:57 PM
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How much can be milled off a set of eheads? I know that you can .060 but is it possible to go more?
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#2
07-07-2004, 01:57 PM
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How much can be milled off a set of eheads? I know that you can .060 but is it possible to go more?
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#3
07-07-2004, 04:36 PM
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I went .075 on my 463 drag engine with no problem. I have heard you can go up to .100".
Just watch out for valve to piston clearance if you have a big cam.
__________________
North Dakotas fastest REAL GTO 10.10 @ 131 MPH in the 1/4 Hoping to get it back together some year. www.jandjrepairandrestoration |
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#4
07-07-2004, 04:43 PM
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I knew a guy who had .125 cut off some low compression heads by a speed shop.
The head gaskets leaked like a sieve, pushrod geometry was all screwed up, and the bolts all needed washers as most bottomed out in the block. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#5
07-07-2004, 09:56 PM
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How much more do you need to go ??
__________________
GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
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#6
07-08-2004, 11:15 AM
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I was hoping to go .075.
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#7
07-11-2004, 05:49 AM
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I have #16 heads [ 1968 ] that have been milled 0.110". I also had the intake face milled the same amount so that the intake alignment remained the same. With dished pistons, I have a CR of 10.2:1 & am using Felpro # 8518 head gaskets. I bent the mating edge of the valley cover to seal properly, the edge that seals along the bottom of the heads below the intake ports, because milling that face leaves a step that can be hard to seal. My cam has a reduced base circle, so valve tip/rocker tip relationship was perfect. I should add that these #16 heads were exceptionally clean & rust free in the coolant passages. I wouldn't have attempted that big a cut on badly rusted heads.
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