Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Bored Ls1, what heads.......

Thread Tools
 
Search this Thread
 
Old Jun 13, 2010 | 08:55 AM
  #1  
RsSean's Avatar
Thread Starter
10 Second Club
iTrader: (27)
 
Joined: Feb 2008
Posts: 2,182
Likes: 2
From: Pensacola, FL
Default Bored Ls1, what heads.......

If you have a bored LS1 to 3.905/.908, class rules state that you must run the factory LS1/LS6 Manifold and TB, what head would you go with? On paper the compression ratio is right around 11.5 to 1. Dedpending on the CC of the heads.

PRC heads have turned me away, reason is I have seen to two different set of heads that leak in the number 7 cylinder.

Patriot heads I like, I had a old set, before they started with the 243 heads.

Need some more opinons on heads from my set up.\

OR could I get away with running a LS3 style head on the bored motor?

Thanks
-Sean-
Reply
Old Jun 13, 2010 | 02:48 PM
  #2  
Blk97WS6's Avatar
TECH Fanatic
iTrader: (19)
 
Joined: Nov 2005
Posts: 1,336
Likes: 0
From: Northern, VA
Default

Wrong section man. Post this over in the INTERNAL engine section
Reply
Old Jun 13, 2010 | 03:11 PM
  #3  
garygnu's Avatar
TECH Senior Member
 
Joined: Feb 2009
Posts: 5,445
Likes: 4
Default

ls3 valves are too big for a ls1 bore.
Reply
Old Jun 13, 2010 | 03:48 PM
  #4  
King Nothing's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

every machine shop i've talked with has said you cannot bore a LS1 block, you can only hone it
Reply
Old Jun 14, 2010 | 11:10 AM
  #5  
RsSean's Avatar
Thread Starter
10 Second Club
iTrader: (27)
 
Joined: Feb 2008
Posts: 2,182
Likes: 2
From: Pensacola, FL
Default

Either way it is getting a bigger bore and bigger pistons. LOL.
Reply
Old Jun 14, 2010 | 11:27 AM
  #6  
King Nothing's Avatar
TECH Veteran
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (9)
 
Joined: Oct 2005
Posts: 4,768
Likes: 26
From: Central Valley
Default

good luck have you talked with a sponsor/reputable engine builder about this at all? they do this stuff for a living and it'd be best to hear from them about it before you start on something that might not work, for some reason i'm thinkin in the back of my head LS3/L92 heads won't work on a LS1 block at all.

personally i sent a set of 243's to west coast racing cylinder heads and from lookin at flow numbers they flow better than the trick flow 220 heads
Reply




All times are GMT -5. The time now is 06:26 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