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

243's shaved .020 ballpark cc?

Thread Tools
 
Search this Thread
 
Old Jan 24, 2012 | 12:38 PM
  #1  
eric1h's Avatar
Thread Starter
On The Tree
iTrader: (7)
 
Joined: Oct 2008
Posts: 142
Likes: 0
Default 243's shaved .020 ballpark cc?

I am having my heads reworked and trying to come up with my new compression ratio after having my 243 heads decked .020.

its a TSP Short block with Diamond -2cc pistons. Any clue?
Reply
Old Jan 24, 2012 | 01:02 PM
  #2  
Sales2@Texas-speed's Avatar
LS1Tech Premium Sponsor
iTrader: (5)
 
Joined: Jan 2008
Posts: 5,053
Likes: 7
From: Texas!
Default

Chambers will be about 61cc after milling .020". Assuming pistons out of the hole .005", 347ci build, and using GM MLS gasket your static compression would be about 10.9:1.
__________________


Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!

COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Reply
Old Jan 24, 2012 | 01:05 PM
  #3  
eric1h's Avatar
Thread Starter
On The Tree
iTrader: (7)
 
Joined: Oct 2008
Posts: 142
Likes: 0
Default

thanks!

Matt, just for grins, you guys don't have/sell any used Ls6 blocks do you? I saw you had new ones, but looking for a cheaper alternative for replacing one with an out of spec Bore...
Reply
Old Jan 24, 2012 | 02:57 PM
  #4  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

General rule with this bore is every .006 = 1cc..
Reply
Old Jan 24, 2012 | 03:11 PM
  #5  
91sonomast's Avatar
TECH Apprentice
 
Joined: Nov 2011
Posts: 337
Likes: 1
From: Murray, KY
Default

Resleeve your out of round cylinder?
Reply
Old Jan 24, 2012 | 04:27 PM
  #6  
Sales2@Texas-speed's Avatar
LS1Tech Premium Sponsor
iTrader: (5)
 
Joined: Jan 2008
Posts: 5,053
Likes: 7
From: Texas!
Default

Originally Posted by eric1h
thanks!

Matt, just for grins, you guys don't have/sell any used Ls6 blocks do you? I saw you had new ones, but looking for a cheaper alternative for replacing one with an out of spec Bore...
No sir, we don't keep anything used laying around very often at all.
__________________


Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!

COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Reply




All times are GMT -5. The time now is 06:51 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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