LS6 Heads worth the effort?
Thread Starter
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
LS6 Heads worth the effort?
A guy at Thunderracing said that I'd probably get about 10rwhp if I swapped my heads (LS1) for LS6's?
What do you think?
I just put in a Cheatr Cam and am planning on the LS6 Intake.
I have Headers (shortys) and ported Throttle Body.
What do you think?
I just put in a Cheatr Cam and am planning on the LS6 Intake.
I have Headers (shortys) and ported Throttle Body.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Originally Posted by cam99
A guy at Thunderracing said that I'd probably get about 10rwhp if I swapped my heads (LS1) for LS6's?
What do you think?
I just put in a Cheatr Cam and am planning on the LS6 Intake.
I have Headers (shortys) and ported Throttle Body.
What do you think?
I just put in a Cheatr Cam and am planning on the LS6 Intake.
I have Headers (shortys) and ported Throttle Body.
Not bad. AFR is 12.5
Pro
Joined: Jan 2004
Posts: 675
Likes: 0
From: FT Bragg North Carolina
heads on a corvette is an easy swap, mill the ls6 heads slightly and run a .040-.045 cometic gasket and you might be impressed with the power you make over the entire RPM range. I would guess 25-30rwhp
Last edited by msghuff; Sep 9, 2006 at 12:18 AM.
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
If your gonna do it, do it right. Have the heads ported to closely match the cam profile. have it done by thunderracing since they are the vendor of your cam. Your car will be kick ***! To make a heads and cam setup work, you need to make sure they match each other to the T! 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Pro
Joined: Jan 2004
Posts: 675
Likes: 0
From: FT Bragg North Carolina
Originally Posted by Ikester
If your gonna do it, do it right. Have the heads ported to closely match the cam profile.
The LS6 heads are great and with a mild cam you can see over 400 easy.
Thread Starter
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
Afraid of valve to piston clearance, does anyone know of a place on LI, NY for Porting& Polishing?
I just finished putting in a Cheatr cam and now I found LS6 heads I want to put on with a LS6 intake.
I really don't want to go through any more expense to p&p, think its stupid? Can't find someone local to p&p. Looking into maybe porting them myself?
I just finished putting in a Cheatr cam and now I found LS6 heads I want to put on with a LS6 intake.
I really don't want to go through any more expense to p&p, think its stupid? Can't find someone local to p&p. Looking into maybe porting them myself?
Last edited by cam99; Sep 11, 2006 at 01:59 PM.
I'm in the same boat.
Melting Slicks
Joined: Sep 2004
Posts: 2,665
Likes: 0
From: Rude, Loud and Aggressive! ECS Twisted Racing, "How fast do ya wanna go?"
ECS just did P/P TEI LS6 heads w/ .920 springs, G5-X3 cam. High dyno pull today while tuning was 471/410!
Last edited by Bad Machine; Sep 11, 2006 at 05:25 PM.
thats crazy power 
Race Director
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
C5 of Year Finalist (performance mods) 2019
2017 C5 of the Year Finalist
2016 C5 of the Year Finalist
2015 C5 of the Year Finalist
TEI or TEA??? I've never heard of TEI before.
Thread Starter
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
Originally Posted by msghuff
heads on a corvette is an easy swap, mill the ls6 heads slightly and run a .040-.045 cometic gasket and you might be impressed with the power you make over the entire RPM range. I would guess 25-30rwhp
How much can they be milled?
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
Originally Posted by msghuff
I would take them down -.024-.030
MSG Huff is the man! He needs to come down to Augusta for the next CC race as there a few 402 A4s that need a fast car to run (mine is not there)Dave
Le Mans Master
Joined: Jan 2003
Posts: 6,059
Likes: 12
From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
Senior Member
Cruise-In V Veteran
Originally Posted by msghuff
I would take them down -.024-.030