piston-valve clearance
Thread Starter
Teching In
Joined: Jan 2003
Posts: 22
Likes: 0
From: Midland,Texas
piston-valve clearance I have a 2001 TA with a Comp 228/228 571/571 112LSA cam. I am thinking of putting on some TEA Stage 1.5 heads that are milled .030. Is this gonna be a problem? Will I still have enough piston/valve clearance?
TECH Fanatic
Joined: Nov 2001
Posts: 1,027
Likes: 2
From: KS
Re: piston-valve clearance With the 228 you are pushing it without milling them. It depends on what valves they use and what they do on their valve job. I'd plan on cutting reliefs or getting another set of heads taylored around that cam if you just don't want to cut reliefs.
Chris
Chris
Re: piston-valve clearance thats gonna be pretty tight...
I was always taught rule of thubm is .600 lift on an ls1...at .600 minus .030 = .570
.571 is higher than that...
I know its not an exact science the way I just did it...but it will get you in the ballpark...and let you know that you will most likely run into some clearance problems...
smarter to get the heads made to the cam....tell them what you got...and what you would like to see...and they'll tell you what they're gonna do...or what they already have made for that cam setup.
are you going for a certain compression ratio??? or just going off of what somebody else has told you to get???
remember...ask the pro's first....its their job....
I am not a pro....
so mine is just an opinion...
however 2000rata is a pro....
I was always taught rule of thubm is .600 lift on an ls1...at .600 minus .030 = .570
.571 is higher than that...
I know its not an exact science the way I just did it...but it will get you in the ballpark...and let you know that you will most likely run into some clearance problems...
smarter to get the heads made to the cam....tell them what you got...and what you would like to see...and they'll tell you what they're gonna do...or what they already have made for that cam setup.
are you going for a certain compression ratio??? or just going off of what somebody else has told you to get???
remember...ask the pro's first....its their job....
I am not a pro....
so mine is just an opinion...
however 2000rata is a pro....
