Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

02LS6 heads how much will they help?

Thread Tools
 
Search this Thread
 
Old Mar 9, 2002 | 11:27 PM
  #1  
blackLS1's Avatar
Thread Starter
Launching!
 
Joined: Feb 2002
Posts: 220
Likes: 0
From: Kenly NC, USA
Default 02LS6 heads how much will they help?

A friend works in a parts house and he said I could probally get a job there.He said he has seen LS6 parts there.They sell parts at good discounts to employees.If I were to purchase some 02 LS6 heads how much would they help?Also plan on doing some form of cam swap.The cam may come later though.Any and all help is greatly apreciated.I'm trying to build my car on a small budget and can only afford to save and buy certain parts. <img src="gr_images/icons/cool.gif" border="0">
Reply
Old Mar 10, 2002 | 02:46 PM
  #2  
blackLS1's Avatar
Thread Starter
Launching!
 
Joined: Feb 2002
Posts: 220
Likes: 0
From: Kenly NC, USA
Default Re: 02LS6 heads how much will they help?

TTT,anyone?
Reply
Old Mar 10, 2002 | 03:47 PM
  #3  
iron maiden's Avatar
Teching In
 
Joined: Jan 2002
Posts: 36
Likes: 0
From: Wayne, NJ
Default Re: 02LS6 heads how much will they help?

Do u plan on porting the eads?
Reply
Old Mar 10, 2002 | 03:53 PM
  #4  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

Black Ls1, i think they are perfect for when your not going to do ported heads. LS6 heads flow like Ls1 stage 1 heads and have smaller chambers for more compression, great bolt on IMO. <img src="gr_grin.gif" border="0">
Reply
Old Mar 10, 2002 | 04:05 PM
  #5  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

And no core charge either! You could even sell your heads to recoop some money!
Reply
Old Mar 10, 2002 | 04:13 PM
  #6  
Patrick G's Avatar
LS1 Tech Administrator
20 Year Member
Photogenic
iTrader: (14)
 
Joined: Nov 2001
Posts: 8,246
Likes: 34
From: Victoria, TX
Default Re: 02LS6 heads how much will they help?

Don't fool yourself, the unported LS6 heads don't flow anywhere close to what ported LS1 heads do, even with stock valves. Don't get me wrong, they're a step up from unported LS1 heads, but can't touch professionally ported LS1 heads. PERIOD!
__________________

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Mar 10, 2002 | 05:00 PM
  #7  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

PatrickG, refer to page 30 of May 2001 Gm High Tech, ARE did extensive flow testing stock and unported on both, you dont call 31 cfm gain at .500" lift even close to porting Ls1 heads?
I have to completely disagree with you.
Reply
Old Mar 10, 2002 | 05:06 PM
  #8  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

Not only that but what about cost difference? $1200 for LS6 castings and no core charge.Higher compression, better exhaust port,2002 castings may even flow better than tested castings did. You cant say this isnt worth considering, it takes stage 2 Ls1 heads to out flow Ls6 castings and thats gonna cost.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 10, 2002 | 05:56 PM
  #9  
Patrick G's Avatar
LS1 Tech Administrator
20 Year Member
Photogenic
iTrader: (14)
 
Joined: Nov 2001
Posts: 8,246
Likes: 34
From: Victoria, TX
Default Re: 02LS6 heads how much will they help?

Obviously, you haven't spent much time at shops that port LS1 heads. Sure the LS6 heads are 30+ cfm better than stock UNPORTED LS1 heads. But a PORTED LS1 head is about 60-70 cfm better than stock unported LS1 head...this would make it about 30-40 cfm better than a stock unported LS6 head. See what I mean. Just trying to pass on useful information. If you trust magazines more, that's your right.
__________________

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Mar 10, 2002 | 06:02 PM
  #10  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

So your saying stage 1 stock valved heads are ported to flow 300cfm at .500" lift? Sounds like you spent some time around leaking flow benches!
Reply
Old Mar 10, 2002 | 06:08 PM
  #11  
Patrick G's Avatar
LS1 Tech Administrator
20 Year Member
Photogenic
iTrader: (14)
 
Joined: Nov 2001
Posts: 8,246
Likes: 34
From: Victoria, TX
Default Re: 02LS6 heads how much will they help?

Casey Snider, chief head porting instructor at the School of Automotive Machinists (SAM) can consistently get 290-300 cfm at .500 lift on LS1 heads with stock valves. With 2.02 and 2.055 valves, he gets in the 300-315 range. LS6 heads are about 20 numbers better when fully ported ported. No leaky flow benches. Remember, we're talking numbers at .500. Flow numbers at .550 and .600 are even better.

You need the best instructors to train the best future head heads porters of the world. I must hang around better shops than you're used to. Oh, did I mention their car ran 9.87 on motor? They know what they're doing. Leaky flow bench, LOL!
__________________

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Mar 10, 2002 | 06:15 PM
  #12  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

How many heads has S.A.M. sold to the public?
This feels like its getting heated and thats not my intention, im not knocking anybodys credibility, especially SAM. You made a statement about this Ls6 consideration that i think is inaccurate.You said basiclly you didnt trust ARE article on flow tests. I think for the money its hard to beat LS6 castings as a choicr, i port heads and i beleive in porting and its benefits, thats not the point of this disagreement.
Reply
Old Mar 10, 2002 | 06:23 PM
  #13  
Matt98SS's Avatar
TECH Apprentice
 
Joined: Nov 2001
Posts: 339
Likes: 0
From: Indianapolis, IN
Default Re: 02LS6 heads how much will they help?

I think its a valid swap if you only have X amount of dollars to spend. Stage 2 or higher (as some shops call them) seem to be ever increasing in price for work done. 2800 last time I checked from MTI. I think the LS6 heads are a decent upgrade for a few HP if you can get them at the right price.
Reply
Old Mar 10, 2002 | 06:26 PM
  #14  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

Thank you for reading whole post and then responding.
Reply
Old Mar 10, 2002 | 11:38 PM
  #15  
blackLS1's Avatar
Thread Starter
Launching!
 
Joined: Feb 2002
Posts: 220
Likes: 0
From: Kenly NC, USA
Default Re: 02LS6 heads how much will they help?

Thanks guys.I will check on the price if I go work there.I'm going to check on some StageII heads prices also.
If I could get the LS6 heads at a deal could'nt I get them ported/polished and come out good?
Reply
Old Mar 10, 2002 | 11:48 PM
  #16  
Jason99T/A's Avatar
I can shift faster than you.
iTrader: (21)
 
Joined: Nov 2001
Posts: 5,133
Likes: 0
From: Baton Rouge, LA
Default Re: 02LS6 heads how much will they help?

I agree with Patrick. You are going to spend $1200 on a set of stock/unported LS6 heads and you still will need to spend a few hundred bucks on valvesprings/retainers. You can purchase a set of GTP stage 1 heads complete with valvesprings for $1499 that I promise you will out perform the LS6 heads. So, at this point, they are roughly the same price. However, you can sell your stock heads if you did the LS6 swap. Still, I would use the ported LS1 heads (as long as they are ported well... Craig @ GTP knows what he is doing). Heck, spend a few hundred more and get the stage 2s w/ single springs. Those will REALLY blow the doors off the unported LS6 heads.

Jason

[ March 10, 2002: Message edited by: Jason99T/A ]</p>
Reply
Old Mar 11, 2002 | 08:18 AM
  #17  
Ragtop 99's Avatar
TECH Senior Member
iTrader: (7)
 
Joined: Nov 2001
Posts: 9,491
Likes: 1
From: Bethesda, MD
Default Re: 02LS6 heads how much will they help?

I would go with stage 1 LS1 heads. ARE sells a set that are inexpensive if you want to stay with stock valves and I'm certain Nick will assure you that the heads outflow LS6 stock heads. As pointed out, you will need better springs for the LS6 heads (assuming a cam swap), new gaskets & bolts, etc. Spend a few extra dollars and get pick-up the extra gain, especially since this is a fairly involved project.

FWIW, my JPR S-1x heads (stock valve sizes) flow 280 cfm at .500
Reply
Old Mar 11, 2002 | 09:55 AM
  #18  
Nine Ball's Avatar
LS1Tech Co-Founder
20 Year Member
iTrader: (38)
 
Joined: Nov 2001
Posts: 32,987
Likes: 58
From: Houston, TX
Default Re: 02LS6 heads how much will they help?

LS1derfull, stock LS6 heads are not as good as ported stage 1 LS1 heads. They are better than stock LS1 heads, yes, but not ported ones.

Also, there are no differences in castings between '01 and '02 LS6 heads. Flow numbers are identical.

You also asked how many heads SAM has sold to the public. They sell quite a few! They train the best head porters and those guys get hired by shops like MTI to port heads. MTI currently has three former SAM students working in their porting/machine shop. SAM is a badass school!

Tony
Reply
Old Mar 11, 2002 | 05:10 PM
  #19  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: 02LS6 heads how much will they help?

I appreciate all the response to my posts, and as always im just trying to help whoever i can, sometimes i am ill informed, but i never intentionally mislead anyone. I'm still fairly new to LS1 scene, i honestly didnt know common stage 1 port jobs flowed 300 cfm at.500"and also only cost $1499. I believe in questioning the path every body travels because i know sometimes nobody bothers to try for a better way because it can be risky or expensive if it doesnt work out.
Following every body else doesnt help engine technology. I will try to keep my posts more fact based in the future.
Reply
Old Mar 11, 2002 | 05:39 PM
  #20  
Matt98SS's Avatar
TECH Apprentice
 
Joined: Nov 2001
Posts: 339
Likes: 0
From: Indianapolis, IN
Default Re: 02LS6 heads how much will they help?

well I don't think stage 1 ported heads flow 300cfm and sure won't be 1500 bucks. if that was the case there would be a lot faster cars. what would you get for stage 2? there are stage 2 heads that don't even flow 300.

must be a super high bench if it flows 300 and they are only charging 1500 <img src="gr_images/icons/wink.gif" border="0">
Reply



All times are GMT -5. The time now is 06:52 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE