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Ed,
Thanks for the chart. The cam I have is from the prior build and is still in good condition. It was designed for the Webers. I probably will need to only do some minor porting to smooth out air flow. According to my cam card, with the 112 degrees of lobe separation, the intake valve opens at 20 BTDC and closes at 56 ABDC. So, taking that into account and looking at the graph you supplied, given that I have rollers lifters, there will be a lot of time for air/fuel flow into the combustion chamber.
Well, now I have to wait until Monday to find out which head I have and if it was ported at all.
Keep the education coming.
Jim
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