Z06 Compression Ratio Question?
Thread Starter
Staging Lane
Joined: Feb 2008
Posts: 60
Likes: 0
Z06 Compression Ratio Question? What makes the compression ratio change from a 10.1 on an ls1 to a 10.5 on a ls6 (both 2001, camaro vs. z06) did they simply use a smaller head gasket on the z06 or change the cc volume down to a 64cc?? I wanted to get the 215 trick flow genx street/strip heads and have a final compression ratio around 10.9-11.1. Would i have to get the heads milled down some or is there somewhere that would sell a thinner/stronger head gasket?
The combustion chamber is smaller on the LS6 (243 casting) compared to the LS1 (853-early, 241-late) heads...
The actual cc's come out to be (with stock head gasket) -same head gasket for both.
LS1 = 67cc's
LS6 = 65cc's
The actual cc's come out to be (with stock head gasket) -same head gasket for both.
LS1 = 67cc's
LS6 = 65cc's
11 Second Club
Joined: Jun 2005
Posts: 1,537
Likes: 0
From: Was New Orleans, but swam to Baton Rouge
Just remember that when you mill the heads, you are not running the same flow on the heads that you originally started with. Yes you have more compression, but the heads will flow a bit less. My advie to you is get some 5.3 liter heads and you should be close to 10.75-10.8 C/R then use a .040 or smaller gasket from thunder racing and that should put you in the range that you want to be at.
Thread Starter
Staging Lane
Joined: Feb 2008
Posts: 60
Likes: 0
Awesome, thats what i thought that an ls1 had 67cc, being the reason for lower compression than the ls6, kinda figured that a manufacturer wouldnt use smaller h/gs so they wouldnt have to make 2 differant h/gs for the ls1 and ls6. I was looking at doing the trick flow h/c package or one of the patriot h/c packages, now possibly a 5.3l head, the stock ls6 lim will fit to the intake runners on the 5.3l heads, right? Im shooting for 470whp-510whp range all n/a. Off the wall, when do the stock 2001 Z06 injectors duty cycle get too high ~85-90% range? I like the titanium exhaust sound and all but will an aftermarket axle back yield a great deal of gain over the stocker? >10whp?
Thanks again!
Thanks again!
Trending Topics
11 Second Club
Joined: Jun 2005
Posts: 1,537
Likes: 0
From: Was New Orleans, but swam to Baton Rouge
Awesome, thats what i thought that an ls1 had 67cc, being the reason for lower compression than the ls6, kinda figured that a manufacturer wouldnt use smaller h/gs so they wouldnt have to make 2 differant h/gs for the ls1 and ls6. I was looking at doing the trick flow h/c package or one of the patriot h/c packages, now possibly a 5.3l head, the stock ls6 lim will fit to the intake runners on the 5.3l heads, right? Im shooting for 470whp-510whp range all n/a. Off the wall, when do the stock 2001 Z06 injectors duty cycle get too high ~85-90% range? I like the titanium exhaust sound and all but will an aftermarket axle back yield a great deal of gain over the stocker? >10whp?
Thanks again!
Thanks again!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
11 Second Club
Joined: Jun 2005
Posts: 1,537
Likes: 0
From: Was New Orleans, but swam to Baton Rouge
