Quote:
Originally Posted by Gach
Those High Ports with 6.200 long valves are very heavy valves, so what do you think. The seat and open pressure has to be to run .750 lift cam. Then add 1.7 rocker on top of that. Instead of a 1.5 or 1.6 rocker. Because thats what SD set them heads/springs up for.
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That would depend not only on the cam lobe being used but the max RPM that is wanted. I believe Troy wants a max of 7000 RPM.
Stan
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