Quote:
Originally Posted by Excaliber
Steve Christ is talking about "valve overlap". On some really wild cams both the intake and exhaust valves can be slightly open at the same time. If I was writing a book I'd put that "disclaimer" in there as well, every valve at TDC for adjustment. That way the advice is bullet and lawyer proof, even if it only applies to the rare situation.
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Doug's old "B" cam has a fair amount of overlap -- like 112 degrees, if memory serves. He has the step up from my "K" cam, which has 96 degrees of overlap, seat to seat.