THE RULE IS:
Used lifters go only on the exact lobe they came off of and never on a new cam.
New lifters are OK on a used cam.
New lifters ONLY on a new cam.
This has been the standard for more than 40 years, to back when I was reading Fischer and Waar.
Other things MAY work if the spring pressures are stock or close and you are lucky.
The only two reasons to replace a camshaft are:
1. You want a different one for change in performance/operating characteristics.
2. The lobes show damage, either pitting or rounding or have varying measurements when measured across the max lift point.
R.
Thanks! I have read similar responses. And I just realized I am missing one lifter so I guess re-using the old lifters is completely out of the question. So what do I need to know when buying new lifters?
I'll take a solid look at the cam later to see if the lobes still share the same shape, roundness/lift point, pitting, etc.
So what do I need to know when buying new lifters?