Pale, if you want a 750 vac buy a used unit at the next swap meet for $50 and rebuild it. As far as cams go I'm not up on the whiplash cams but I'm sure you can find a decent grind for under $150. If that's too much the Sumit 488 cam is like $89 w/o lifters. That motor should run fine. It should have at least 9:1 if not a tad more w/ the 516 heads. Quench is over-rated... slam it together and go for a ride.