Polishing & Porting LS-1 Heads
Thread Starter
Instructor
Joined: Dec 1999
Posts: 171
Likes: 0
From: Vancouver WA
Polishing & Porting LS-1 Heads
While the engine is out of the car, I was thinking of polishing and porting the heads; however, I've heard that there is very little to be gained for expense.
Any thoughts.............
Any thoughts.............
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
Re: Polishing & Porting LS-1 Heads (Colbalt Blue)
I am not sdure exactly what you mean, but many have had their LS1 heads, CNC'd, ported and polished and picked up a lot.
CSCollis gained 40 RWHP just from heads :thumbs:
CSCollis gained 40 RWHP just from heads :thumbs:
Thread Starter
Instructor
Joined: Dec 1999
Posts: 171
Likes: 0
From: Vancouver WA
Re: Polishing & Porting LS-1 Heads (MC TORCH RED)
From what I was told, was that the LS-1 Heads are pertty well ported out and for the money, depending on what it cost to do the P&P it is sometimes better to just buy a new set designed for the best airflow.
BTW, is there any downside to P&P, like emissions or computer issues.
BTW, is there any downside to P&P, like emissions or computer issues.
Le Mans Master
Joined: Jul 2002
Posts: 6,147
Likes: 32
From: Dallas TX
Re: Polishing & Porting LS-1 Heads (Colbalt Blue)
From what I was told, was that the LS-1 Heads are pertty well ported out and for the money, depending on what it cost to do the P&P it is sometimes better to just buy a new set designed for the best airflow.
BTW, is there any downside to P&P, like emissions or computer issues.
BTW, is there any downside to P&P, like emissions or computer issues.
The cheapest I have seen ported ls1 heads is around $1000. Combine that with a new cam, and it will be worth it.
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
Re: Polishing & Porting LS-1 Heads (MC TORCH RED)
The guy that does these heads angle mills them to increase compression and they are very good heads and put up better numbers than my Patriots
Racer
Joined: Jan 2003
Posts: 252
Likes: 0
From: northern nj
Re: Polishing & Porting LS-1 Heads (Colbalt Blue)
Ported LS1 heads outflow the ported LS6 heads up to .450, and at .600 the LS1 flows 283 compared to 289 from the LS6. This is according to LS1/LS6 performance book. So it seem as if it is worth it :auto:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
