piston to valve clearence
01-16-2009 | 11:01 PM
#1
piston to valve clearance I have 6.0 out of a truck (lq4)i'm putting 799 heads on it(64cc)want to know how much i can mill off them and thickness of head gasket i can use i'm having the pistons fly cut and using a 242 duration 110lsa 612 lift cam i'm shooting for as much compression as i can get...thanks...
Last edited by billyflantos; 01-17-2009 at 12:28 AM.
01-16-2009 | 11:03 PM
#2
Lift means nothing concerning PTV clearance.
01-17-2009 | 12:17 AM
#3
I milled the 5.3 heads 0.020" on my LQ4 with cam 224/236 .609 .607 111 +2, the exhaust only had about 0.010" clearance. Now the valves are the oversized version that TSP used to sell with the prc 2.5 heads. I had to put eyebrows in the perimeter of the piston to clear. This was with stock gasket thickness.
