LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Valve Lash

Thread Tools
 
Search this Thread
 
Old Jun 9, 2006 | 04:50 PM
  #1  
Ari G's Avatar
Thread Starter
TECH Resident
iTrader: (25)
 
Joined: Jul 2005
Posts: 818
Likes: 0
From: Houston
Default Valve Lash

How do i set it properly on RR with poly locks????

I have tryed the spin the pushrod method but dosenīt seem to work properly??

Do let the H.lifters have a litle flex left in them or what?

Thanks
Reply
Old Jun 9, 2006 | 05:12 PM
  #2  
98TA_vert's Avatar
On The Tree
 
Joined: Mar 2005
Posts: 156
Likes: 0
From: South Jersey
Default

I have always went to zero lash then 1/2 turn and they were ok. your problem might be the valve isnt in a closed position or are you using self aligning rockers or guide plates? pull your valvecovers off and see if any rocker arms are hitting the vc and Possibly pushrod length but that shouldnt be a problem with the hot cam

this is assuming the engine ran and was tapping
Reply
Old Jun 10, 2006 | 09:44 AM
  #3  
Ari G's Avatar
Thread Starter
TECH Resident
iTrader: (25)
 
Joined: Jul 2005
Posts: 818
Likes: 0
From: Houston
Default

Iīm using self alignin rockers,the rr do not hit the VC

Could it be that the H.lifter are bad

I can spin the PR with my fingers untill i cant tighten the locks any further
Reply
Old Jun 10, 2006 | 10:17 AM
  #4  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

spin the pushrod almost always results in too tight. We covered this just the other day search.
Reply
Old Jun 10, 2006 | 06:45 PM
  #5  
Sick99WS6's Avatar
On The Tree
iTrader: (2)
 
Joined: Mar 2006
Posts: 111
Likes: 0
From: Atlanta (Vinings), GA
Default

Yeah, if yours are too tight the car will be loud as hell and run like ****. Mine wouldnt start after mine were too tight either.
Reply
Old Jun 10, 2006 | 06:56 PM
  #6  
Niteninja's Avatar
Staging Lane
20 Year Member
 
Joined: Feb 2005
Posts: 51
Likes: 0
Default

Are you setting them with the car running? That was the easiest way for me. Use cardboard to make a shield and you won't get that dirty, and the oil won't land on the headers to make it smokey.
Reply
Old Jun 11, 2006 | 03:55 PM
  #7  
Ari G's Avatar
Thread Starter
TECH Resident
iTrader: (25)
 
Joined: Jul 2005
Posts: 818
Likes: 0
From: Houston
Default

Originally Posted by Niteninja
Are you setting them with the car running? That was the easiest way for me. Use cardboard to make a shield and you won't get that dirty, and the oil won't land on the headers to make it smokey.
That was my next step
Reply
Old Jun 11, 2006 | 07:12 PM
  #8  
DeltaT's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2005
Posts: 2,404
Likes: 1
Default

I do them to the "barely tight spinning pushrod point", then I use a cheap ($11) mechanic's stethascope to listen on each rocker stud while the motor is running and warm, and adjust until the 'tapping' is minimized.

What's important is how you tighten the polylocks. I get the adjustment where I want with the body of the polylock and then tighten the heck out of the set screw. Helps to use this excellent Summit tool (make sure you get the right size):



This tools makes it a lot easier to do when the engine is running. Probably safer, too. $21.95 at Summit.

Jim
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo




All times are GMT -5. The time now is 11:51 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