Whatever they did, If they dyno tested it at the happy westech facility you can throw the data in the trash or multiply it by about .85-.87 to get the REAL numbers. Seen more than one engine dyno run at westech and then at another facility. It ran the MPH consistent with the lower numbers.
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For the OP. I'd only be concerned with the numbers at .500-.550 and below. What your heads flow at .650 isn't of concern when the cam is only opening a gross number .050 below that number. Figure lash and bad valvetrain angles and it's much less at the valve, likely a net of .550-.560 if you are lucky with the 1.6 rocker.
That cam works pretty well in stroker set ups
