I am using a solid FT cam from Dwayne Porter.
My engine is 470" 10.7-1 .040" quench RPM heads. Performer RPM intake, Comp Pro Magnum 1.5 rockers
244* intake 252* exh. @ .050"
.520 int .540 exh.
110 Lobe sep
Howard's EDM lifters
In @ 106*
Valves adjusted cold @ .012 and .014 "
I have dyno time only and the pulls started @ 3500 so I can't say for sure what we have below that RPM or what vacuum is either.
I would think with your heads and 500" your numbers would be higher, and maybe a lower RPM peak HP .
I hope that this info is helpful ?
Mark