Milling intake face of heads
#1
Milling intake face of heads
I am taking my ls3 heads down another .030" while they're off. They're already cut .030", so I am going to have the intake faces milled to correct intake manifold alignment.
Do you cut the intake face at a 1:1 ratio to how much you milled?
Do you cut the intake face at a 1:1 ratio to how much you milled?
#5
People do it all the time, I'm not too worried about it.
AI even offers ls3 heads @ 60ccs. 60cc is a .050"-.060" mill.
http://www.advancedinduction.com/LSX...21GMPRHead.php
AI even offers ls3 heads @ 60ccs. 60cc is a .050"-.060" mill.
http://www.advancedinduction.com/LSX...21GMPRHead.php
Last edited by mchicia1; 03-07-2014 at 08:48 AM.
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#10
from an old chevy book.... should work but as others said check the machine shop...I believe a little more comes off the intake than the head
Intake Surface Mill Proportion = .707 ÷ (SIN (45 - intake face angle))
Intake Surface Mill Proportion = .707 ÷ (SIN (45 - intake face angle))
#12
These heads already flow too much for a 347. The wiseco valve reliefs are like .250 deep or something absurd. I highly doubt it would even get close to the intake seat milling .060.
Anyway, I'm thinking about just bolting them back on now. Apparently it isn't that easy to find a machine shop that will be able to mill the intake side and I don't want to mill the intake manifold because then it won't work on non milled heads and would be tough to sell.
Anyway, I'm thinking about just bolting them back on now. Apparently it isn't that easy to find a machine shop that will be able to mill the intake side and I don't want to mill the intake manifold because then it won't work on non milled heads and would be tough to sell.
Last edited by mchicia1; 03-07-2014 at 01:46 PM.