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

Valve adjustment

Thread Tools
 
Search this Thread
 
Old Feb 8, 2009 | 11:26 AM
  #1  
BoostBandit's Avatar
Thread Starter
Staging Lane
iTrader: (1)
 
Joined: Apr 2006
Posts: 66
Likes: 0
Default Valve adjustment

ok guys got a 402, with comp lifters,comp pushrods, and comp 1.75 rockers, when I adjusted the valves I went to zero lash and then an half a turn past. They seem a little noisy but are in a uniform sound. Did I set these wrong? any input would help. Thank you
Reply
Old Feb 8, 2009 | 11:51 AM
  #2  
vettenuts's Avatar
TECH Senior Member
iTrader: (4)
 
Joined: Jul 2004
Posts: 8,092
Likes: 13
From: Little Rhody
Default

Number of turns on a fixed fulcrum rockers is not a good way to determine lifter preload. You really need to get an adjustable and measure the zero lash length and then add the desired preload so you are sure it is correct.
Reply
Old Feb 8, 2009 | 12:09 PM
  #3  
03 BUSA's Avatar
10 Second Club
iTrader: (25)
 
Joined: Dec 2004
Posts: 2,554
Likes: 1
From: Kannapolis, NC
Default

Half to 3/4 turn is good. Over 3/4 is too much.
Reply
Old Feb 8, 2009 | 12:26 PM
  #4  
BlwnLs1GTO's Avatar
TECH Enthusiast
15 Year Member
Photogenic
iTrader: (12)
 
Joined: Mar 2006
Posts: 577
Likes: 8
Default

I'm pretty sure it's 3/4(minimum) to 1 and 1/2 (maximum) turns from 0 lash to torque spec.
I don't believe you have much preload set (if any) and that's why you're getting the noise.

Do a search on here for directions for this method.


edit. Hydraulic Lifters ^

Last edited by BlwnLs1GTO; Feb 8, 2009 at 12:31 PM.
Reply
Old Feb 8, 2009 | 12:52 PM
  #5  
03 BUSA's Avatar
10 Second Club
iTrader: (25)
 
Joined: Dec 2004
Posts: 2,554
Likes: 1
From: Kannapolis, NC
Default

^^^Yes, I think you are right now that I think about it. My old setup was 1 1/4 turns and I believe my builder told me he liked 1 1/2 turns but the 1 1/4 was fine.
Reply




All times are GMT -5. The time now is 04:22 AM.

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