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

Dead lifters?

Thread Tools
 
Search this Thread
 
Old Sep 15, 2007 | 05:39 PM
  #1  
gearheads78's Avatar
Thread Starter
TECH Enthusiast
iTrader: (29)
 
Joined: Aug 2003
Posts: 662
Likes: 0
From: Dallas TX
Default Dead lifters?

Got the car back together a couple weekends ago and it seems to have a little more valvetrain noise than I think it should. I thought maybe wrong size pushrods but after checking several valves to get .080 preload I am calling for 7.330-7.350 and I have 7.350 so that is probably not the problem.

What I did notice is out of the 8 valves I check so far 2 of them I can just compress the lifter plunger pushing down with my thumb. What do you guys think? Collapsed lifters?
Reply
Old Sep 15, 2007 | 05:40 PM
  #2  
JMBLOWNWS6's Avatar
9 Second Club
iTrader: (17)
 
Joined: Nov 2002
Posts: 4,997
Likes: 0
From: New Braunfels ,Tx
Default

Is this on a new engine?
Reply
Old Sep 15, 2007 | 06:34 PM
  #3  
gearheads78's Avatar
Thread Starter
TECH Enthusiast
iTrader: (29)
 
Joined: Aug 2003
Posts: 662
Likes: 0
From: Dallas TX
Default

No its a used engine but it does have apox 200 miles on a new set of Comp 921 1.44" springs valve springs.

The farther I go in to it I am not sure about being able to push the lifters down is a problem or not. I think just turing the motor over and over getting each valve on base circle caused the oil to push out of the lifters. When I started the first 5 were tight then 6th, 8th, 10th,12th13,14,15,16th were all where I can push them down. Some are worse than others though. Two of them take almost no pressure at all.
Reply
Old Sep 16, 2007 | 09:18 AM
  #4  
gearheads78's Avatar
Thread Starter
TECH Enthusiast
iTrader: (29)
 
Joined: Aug 2003
Posts: 662
Likes: 0
From: Dallas TX
Default

no comments? I know the answer. I just wanted some experienced 2nd opinions. My rockers are fine and my pushrods are right so the only other thing it could be is lifters?

I just wish I would have changed them out while the long block was still on the stand. is what it feels like knowing its got to come apart again.
Reply




All times are GMT -5. The time now is 08:22 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