04-13-2021, 07:05 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
The biggest contributor to the noise is the cam lobe shape. A lifter in and of itself is not noisy, but if you have a quick cam lobe that is shocking the valves open and slamming them shut will not be quiet.
Most hydraulic rollers will have a bit of a sewing machine sound and it will go up from there to downright annoying.
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