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

59cc heads + CR + Gaskets

Thread Tools
 
Search this Thread
 
Old Feb 4, 2009 | 03:56 PM
  #1  
fastvet's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Dec 2007
Posts: 588
Likes: 0
From: !!!!TEXAS!!!!
Default 59cc heads + CR + Gaskets

Alright, I have 59cc 5.3L heads with a 224/230 .581/.588 114LSA with stock head gaskets and stock bottom end. Im already running low 11s compression, my question is would it benefit me to jump to .045 or even a .030 cometic gasket for a street car that does see the track at times????

I think with the .045 gaskets, I should be right in the mid 11s compression. Any imput would help. thanks!!
Reply
Old Feb 4, 2009 | 10:16 PM
  #2  
405HP_Z06's Avatar
TECH Addict
iTrader: (11)
 
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
Default

I calculate your current SCR at 11.34:1. See below for calculation:



If you install .040/3.910 Cometic's, your SCR goes to 11.76:1. You would see a slight performance increase but I'm not sure it would be worth the amount of work to swap head gaskets.

Reply
Old Feb 4, 2009 | 11:30 PM
  #3  
billyflantos's Avatar
TECH Enthusiast
iTrader: (6)
 
Joined: Aug 2008
Posts: 571
Likes: 0
From: DAVIDSON NC
Default

how bout 799 heads milled .040 on a lq4 with .040 cometics any help on that,thanks
Reply
Old Feb 5, 2009 | 03:51 PM
  #4  
fastvet's Avatar
Thread Starter
11 Second Club
iTrader: (2)
 
Joined: Dec 2007
Posts: 588
Likes: 0
From: !!!!TEXAS!!!!
Default

Originally Posted by 405HP_Z06
I calculate your current SCR at 11.34:1. See below for calculation:



If you install .040/3.910 Cometic's, your SCR goes to 11.76:1. You would see a slight performance increase but I'm not sure it would be worth the amount of work to swap head gaskets.


Thanks bud. That should be good enough for a normal street car, right? I mean, with a little better tune it should be safe with 93 octane, right. And yeah, it would be worth it for me. I love messing with my car, I just dont have the money for a bigger engine right now, so im maxing out the 224 cam I have right now to see what I can do with it!!! Thanks again!!
Reply
Old Feb 5, 2009 | 06:49 PM
  #5  
405HP_Z06's Avatar
TECH Addict
iTrader: (11)
 
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
Default

Originally Posted by billyflantos
how bout 799 heads milled .040 on a lq4 with .040 cometics any help on that,thanks
Assumptions:
stock combustion chamber volume: 64.45cc
Flat mill: .0065 = 1cc
Heads milled .040 = 6.15cc chamber reduction = 58.3cc combustion chamber

Calculation:

Reply
Old Feb 5, 2009 | 06:51 PM
  #6  
405HP_Z06's Avatar
TECH Addict
iTrader: (11)
 
Joined: Jun 2003
Posts: 2,215
Likes: 19
From: Arlington, Tx
Default

Originally Posted by fastvet
Thanks bud. That should be good enough for a normal street car, right? I mean, with a little better tune it should be safe with 93 octane, right. And yeah, it would be worth it for me. I love messing with my car, I just dont have the money for a bigger engine right now, so im maxing out the 224 cam I have right now to see what I can do with it!!! Thanks again!!
You will be fine as long as you run 93 and the tune is correct.
Reply




All times are GMT -5. The time now is 03:20 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