BuddhaZ06

i have an 01 z06 stock 346 cube, and i have 66cc PRC heads on it and a .615/.612 cam in it. when i was checking ptv clearance i had plenty of room. i put on some gm mls head gaskets hoping to get close to my factory compression ratio. i was thinking bout milling heads so i can get some more compression out of it. id like to get 11.5:1 or around there. should i mill to maybe a 62cc head? not sure on how much need milled and how low of cc i should go in the combustion chamber. any input would be appreciated!

BuddhaZ06

using wallace racing calculator, it says to go from 10.5-11.5:1 is to mill heads .030 . seems like a lot. but i dont know how much that would knock my cc's down to..

jonnyc

take a look at this
http://www.ls1tech.com/forums/advanc...ume-vs-cr.html

at 11.5:1 you might have to fly cut the piston.depends on your cams duration.

vettenuts

You might also consider a thinner gasket. A little compression boost but a smaller squish will help with detonation and KR.

Blow Torch

feeder82

this web site has a excel file that you can use to calculate comp. static and dynamic
http://kyhorsepower.com/forums/showt...t=52671&page=1