solid lifter valve lash settings
Thread Starter
Drifting
Joined: Oct 2007
Posts: 1,254
Likes: 5
From: Brown Summit North Carolina
solid lifter valve lash settings
I started and ran my 350 motor Tuesday to breakin the new solid lifter cam. Ran the motor for just over 30 minutes between 2000 and 2500 RPM's. Used Joe Gibbs BR oil / Primed the oil pump / filled float bowl manually before starting.
The motor fired right a way and ran great. Was able to get to 2000 RPM right a way.
All went well when finished so far knock on wood! , the sound at idle was very nice at the exhaust.
I had the lash set at +.002 for a cold start per instrunctions.
int .022 cold Hot is .020
ex. .027 cold Hot is .025
I have not had a chance yet to set them at normal operating temp.
I like the sould of the chatter from solid lifters. Comp Cams said I can adjust as much as + or - .004 from the cam card setting.
Question is
If I set at .022 on Intake HOT and .027 Exhaust HOT
I feel I will get a more noticable chatter , thats ok with me.
But what performance gains or losses will this cause if any?
Are there any reasons to not set them a little losser just to get a little more chatter??
Thanks
David
The motor fired right a way and ran great. Was able to get to 2000 RPM right a way.
All went well when finished so far knock on wood! , the sound at idle was very nice at the exhaust.
I had the lash set at +.002 for a cold start per instrunctions.
int .022 cold Hot is .020
ex. .027 cold Hot is .025
I have not had a chance yet to set them at normal operating temp.
I like the sould of the chatter from solid lifters. Comp Cams said I can adjust as much as + or - .004 from the cam card setting.
Question is
If I set at .022 on Intake HOT and .027 Exhaust HOT
I feel I will get a more noticable chatter , thats ok with me.
But what performance gains or losses will this cause if any?
Are there any reasons to not set them a little losser just to get a little more chatter??
Thanks
David
Last edited by dmayhew; Mar 26, 2009 at 08:20 PM.
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
Race Director
Joined: Apr 1999
Posts: 11,520
Likes: 13
From: CORVETTE 77 385 C.I. TEXAS
The other way around- tight for higher HP. Loose would be expected to reduce max. HP. This could increase low rpm torque so depending on the setup, it could result in better perf. at lower rpms.
Pro
Joined: Feb 2007
Posts: 548
Likes: 1
From: Victoria VA
Thnaks for the correction I knew it was a difference been many years since I had that solid lift set up. It did make a difference.
Drifting
Joined: Oct 2004
Posts: 1,259
Likes: 7
From: Ontario
Are you running aluminum heads? If yes you went in the wrong direction and are running way to much lash.
You may like the sound of a lot of lash, but you are beating the crap out of your valve train.
You may like the sound of a lot of lash, but you are beating the crap out of your valve train.
Last edited by Retro78; Mar 26, 2009 at 10:50 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Based on actual experience, I respectfully disagree. Running valves a tad looser than specs definitely increases performance.
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
Thread Starter
Drifting
Joined: Oct 2007
Posts: 1,254
Likes: 5
From: Brown Summit North Carolina
Iron Block Iron Heads / +.002 on cold startup
David
Last edited by dmayhew; Mar 27, 2009 at 03:10 PM.
