Re: How much is too much
NO cam can be reground and match original specs. Either the lift or duration has to change.
I agree with Mitch to leave it alone since it runs fine now.
BTW, I have a Studebaker V8 and the spec calls for .024" valve clearance. I thought this would make the engine sound like a rear bumper dragging tin cans at a wedding ceremony, but it's quiet.
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