Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Compression test results - opinions

Thread Tools
 
Search this Thread
 
Old Nov 23, 2017 | 08:02 AM
  #1  
Double06's Avatar
Thread Starter
TECH Resident
10 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Apr 2012
Posts: 766
Likes: 284
From: Potomac, MD
Default Compression test results - opinions

Did a test just to see how things were doing when I changed plugs out - it is an 11.5 to 1 LS motor with a good size cam 243/259 at .050. All cylinders were similar with an initial start of 130-150 then second turn going to 170 or so with a 3 one in the 190 or so with a 200 or so max after the 4th turn or so. Just wanted to see what others may have done in the past and results. Seems OK to me.
Reply
Old Nov 23, 2017 | 08:26 AM
  #2  
LLLosingit's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Aug 2013
Posts: 3,845
Likes: 487
From: Iowa
Default

Don't worry about the max number(unless really low), Different camshaft profiles/ring gaps/types will result in different numbers. What you're really wanting to see is all numbers being within around 10% of each other.
Reply
Old Nov 23, 2017 | 10:07 AM
  #3  
Double06's Avatar
Thread Starter
TECH Resident
10 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Apr 2012
Posts: 766
Likes: 284
From: Potomac, MD
Default

That's what I thought - I would say they were all within 5% of one another.
Reply




All times are GMT -5. The time now is 05:50 AM.

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