Slightly used engine parts
Thread Starter
Heel & Toe
Joined: Oct 2017
Posts: 20
Likes: 0
From: Jersey Shore
Slightly used engine parts
I'm changing my heads, and I'm thinking of replacing my lifters with anti-pump up lifters that have less then 25 hours on them. I replaced them when I was trying to figure out why motor wasn't running right. (misunderstood marks on timing sprocket and was 2 teeth off)
Would it be ok to use these practically new lifters?
Would it be ok to use these practically new lifters?
Safety Car
Joined: Sep 2005
Posts: 4,226
Likes: 643
From: Orange County Ca
You have regular lifters in there now and the car is running ok????
You want to put the previously installed anti lifters back in???
IF the anti's aren't damaged and IF you can get them in the same holes as they came out of, it should be ok.
What advantage did you gain by using the anti's in the first place?
You want to put the previously installed anti lifters back in???
IF the anti's aren't damaged and IF you can get them in the same holes as they came out of, it should be ok.
What advantage did you gain by using the anti's in the first place?
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
They absolutely have to go back in the same lifter boss on the same cam or you will destroy both cam and lifters. Best advice leave it alone.
Race Director
Joined: Nov 2006
Posts: 13,256
Likes: 7,844
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
I'll throw in my 2 cents.
You should never have charged lifters on that cam in the first place. Now that you have, and they are broken in and running. I would NEVER change them again!
Recipe for disaster.
Don't fix what ain't broke!
You should never have charged lifters on that cam in the first place. Now that you have, and they are broken in and running. I would NEVER change them again!
Recipe for disaster.
Don't fix what ain't broke!
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
Its generally OK to put new lifters on an old cam but not the other way around. Perhaps if the lifters were run on that cam and you can put them back in the same holes they came out of, you might be OK. But I'm inclined to agree you're better off leaving well enough alone.
Thread Starter
Heel & Toe
Joined: Oct 2017
Posts: 20
Likes: 0
From: Jersey Shore
Hoping to avoid valve float. It wasn't the lifters that were bad, as a know it all kept barking in my ear until I changed them. Turned out I had the cam sprocket 3 teeth off. I never used that type with the degree settings all over it and I got confused. And I did get float right around 5800 rpm. These heads got beefer springs also.
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
Race Director
Joined: Nov 2006
Posts: 13,256
Likes: 7,844
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Valve float isn't your lifters! It's your valve springs!
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
Took the words right out of my mouth.
One more thing to consider is ignition. Years ago I had a 4-speed Monza that I was not shy about revving over 6000 rpm. One day I found it would fall flat at 5900. A few days later it was at 5800, then 5700. I talked it over with one of my mentors and he suggested the spark plugs might be failing. Seemed unlikely but it was a lot easier and cheaper than swapping the valve springs. Long story short, he was right. Problem solved.
One more thing to consider is ignition. Years ago I had a 4-speed Monza that I was not shy about revving over 6000 rpm. One day I found it would fall flat at 5900. A few days later it was at 5800, then 5700. I talked it over with one of my mentors and he suggested the spark plugs might be failing. Seemed unlikely but it was a lot easier and cheaper than swapping the valve springs. Long story short, he was right. Problem solved.