5.3 head milling
#1
5.3 head milling
I just wanted to know what some of you guys have milled your stock 5.3 heads too on a 5.3, and what compression ratio it neted you. .030" is the standard, and I have found some that have went out to .050". calculators give me different answers. looking to get to 10.5:1. I know 11:1 is doable, and have seen 228/230 cams with a .050 mill. just wanted to see what you guys have done. ptv clearance issues anyone?
thanks
thanks
#5
I had the same question, If i could get to 53cc with a .041 head gasket i think i'd be right around 10.7-75:1 But i Don't know what my factory piston dish is or how far they are in the hole from the factory, and then What kind of lift can i expect to use after milling? Hope i'm not hi jacking i was just curious my self, Thanks
#6
I had a hard time finding exact answers to those same problems. I came up with a dish of -8cc on one calculator. and a compressions ratio and mill calculator came up with a .036 mill for 10.5-1, and .049 for 11-1. and -.008 out of the hole, but some say -.006. the only sure way to get it is to measure for yourself.
#10
On The Tree
Join Date: Jan 2006
Location: Weslaco, TX
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i've personally got my stock heads .045 and running the 228/228 588 588 112 but hopeing to get rid of it soon (cam)...i also have a friend who actually has a pair of 862's milled .050 best he's hit was an 11.3..... i myself changed pushrods from the 7.4's to the 7.350... and did not have any pvt issues...im running the TBSS intake with the ls2 90mm TB.