LS1TECH - Camaro and Firebird Forum Discussion

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

help with change of compression effects

Thread Tools
 
Search this Thread
 
Old Dec 27, 2024 | 01:04 PM
Share
  #1  
learning101's Avatar
learning101
Thread Starter
Teching In
 
Joined: Jan 2024
Posts: 44
Likes: 1
Default help with change of compression effects
Did the head and piston change on my 5.3 put flat top pistons on with 799 heads cut .030 off deck so I went from stock 9.5 to 10.5 could I still use regular gas 89 octane. and will this effect the computer?
Reply
0
Old Dec 27, 2024 | 01:47 PM
Share
  #2  
G Atsma's Avatar
G Atsma
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,308
Likes: 3,623
From: Central Cal.
Default
If it's 89 octane you should still be OK. Have you run it yet? If so, and no knocking, keep cruisin'!
Reply
0
Old Dec 27, 2024 | 04:57 PM
Share
  #3  
the_merv's Avatar
the_merv
11 Second Club
Veteran: Air Force
20 Year Member
Loved
Community Favorite
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Default
Don't know how you think it will Affect the computer. Stock tune it will run all day might get labor knock in some of the part throttle range, it's a matter of where the timing is.
Reply
0
Old Dec 27, 2024 | 06:02 PM
Share
  #4  
Lxjoshxl's Avatar
Lxjoshxl
On The Tree
Photogenic
Photoriffic
Liked
Loved
 
Joined: Jun 2023
Posts: 186
Likes: 12
Default
Wouldn’t hurt to get a datalog and see if you’re getting any knock retardant jumping up. I’ve learned the stock tune file is pretty safe overall but you’ll be losing power if it’s just pulling a ton of timing?
Reply
0
Old Jan 6, 2025 | 06:40 AM
Share
  #5  
Old Buzzard's Avatar
Old Buzzard
TECH Fanatic
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2009
Posts: 1,074
Likes: 478
From: Bostwick, GA.
Default
And, what do the plugs look like?
Reply
0
Old Jan 7, 2025 | 08:16 AM
Share
  #6  
grubinski's Avatar
grubinski
TECH Enthusiast
15 Year Member
Community Favorite
Top Answer: 1
 
Joined: May 2008
Posts: 646
Likes: 579
From: Carnation, WA
Default
.030” out of the hole? Sure you’ll have enough quench?
Reply
0
Old Jan 7, 2025 | 10:01 AM
Share
  #7  
learning101's Avatar
learning101
Thread Starter
Teching In
 
Joined: Jan 2024
Posts: 44
Likes: 1
Default
Originally Posted by grubinski
.030” out of the hole? Sure you’ll have enough quench?
had trouble starting it found out stock pushrods are too long and left my valves open so i ordered .375 and .350 push rods with taking .030 off the head so we will see o ordered a push rod checker just in case
Reply
0
Back to Subforum
Generation III Internal Engine
View Next Unread
Looking for cam recommendations




Advanced Search

All times are GMT -5. The time now is 12:26 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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