[Jerry Clayton]

Brent---you don't have much control over the amount of vacume you will pull with this set up---it will pump so much according to the pump sizes and speed(rpm/belt drive ratio)that you choose and be countered by amount of leakdown /blowby and volume the pressure pump puts back into the crankcase----your relief valve ??????????will hopefully prevent the loss of intake gaskets with the push/pull/push pulses in the ports