Ls6 heads question
Ls6 heads question Ok. So I just got some ls6 heads that I'm putting on my 1999 ls1.
1. Will ls6 heads bump compression without milling?
2. Will I need to do anything to my pistons?
3. I heard there is a gasket I can use to bump compression? If not what gasket should I run.
Iv read a lot. But any more info would be a great help. Thanks!
1. Will ls6 heads bump compression without milling?
2. Will I need to do anything to my pistons?
3. I heard there is a gasket I can use to bump compression? If not what gasket should I run.
Iv read a lot. But any more info would be a great help. Thanks!
[QUOTE=ICEY?;16650997]Ok. So I just got some ls6 heads that I'm putting on my 1999 ls1.
1. Will ls6 heads bump compression without milling?
Over stock LS1 heads? Yes
2. Will I need to do anything to my pistons?
No, as long as you don't over due cam
3. I heard there is a gasket I can use to bump compression? If not what gasket should I run.
Yes, if you run a thinner head gasket. Thickness is up to you, but thiner is not better.
Iv read a lot. But any more info would be a great help. Thanks!
1. Will ls6 heads bump compression without milling?
Over stock LS1 heads? Yes
2. Will I need to do anything to my pistons?
No, as long as you don't over due cam
3. I heard there is a gasket I can use to bump compression? If not what gasket should I run.
Yes, if you run a thinner head gasket. Thickness is up to you, but thiner is not better.
Iv read a lot. But any more info would be a great help. Thanks!
OP, what camshaft are you/will you be running?
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1. Yes, 243 heads will bump up CR
2. I'm running a similar cam and did nothing to my pistons
3. Cometic .041 gaskets are thinnner than the stock GM MLS gaskets. But, honestly the GM gaskets seal better. You could probably get away with a .010" mill if you wanted. That's what I did to mine just to clean 'em up.
2. I'm running a similar cam and did nothing to my pistons
3. Cometic .041 gaskets are thinnner than the stock GM MLS gaskets. But, honestly the GM gaskets seal better. You could probably get away with a .010" mill if you wanted. That's what I did to mine just to clean 'em up.
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Teching In
Joined: Apr 2012
Posts: 15
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From: pa
i am running the ls6 stage 2.5 from texas speed milled .025, with stock pistons and stock gm head gaskets. had plenty of piston to valve clearance even with a pretty large cam 231/239 .617 .623 car runs great, sounds great even on a base tune! it hits the dyno tom morn for final tuning. just make sure you account for pre- load when measuring for your push rods!
TECH Senior Member
Joined: Feb 2009
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check the valve seats for any leaks,do a valve job if you find a leak..006 is about equal to 1 cc.valve to piston clearance mostly depends on valve timing events.if you have the cam card list all the valve info ,intake opening etc.
When we mill our cylinder heads, we usually perform a valvejob as well, thus recessing the valve and gaining back PTV clearance.
__________________
NOW OFFERING TSP BY YANK CONVERTERS
COMP - FAST - PACESETTER - WISECO PISTONS - LUNATI - CALLIES - NEW TSP BRAND CRANK & RODS - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - ARH HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - PRECISION INDUSTRIES - YANK - CIRCLE D - AND MORE!
COMP - FAST - PACESETTER - WISECO PISTONS - LUNATI - CALLIES - NEW TSP BRAND CRANK & RODS - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - ARH HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - PRECISION INDUSTRIES - YANK - CIRCLE D - AND MORE!
NEW NUMBER (512)863-0900
