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Jim Brierley · 08-12-2019, 11:52 AM

Duration also changes slightly, less clearance gives more duration. Too little clearance can cause valves to burn. I recommend .012" on intakes, .014" exhausts on my B and C re-grinds, which were taken off stock original cams.

08-12-2019, 11:52 AM	#11
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,085	Re: valve clearence Duration also changes slightly, less clearance gives more duration. Too little clearance can cause valves to burn. I recommend .012" on intakes, .014" exhausts on my B and C re-grinds, which were taken off stock original cams.