Quote:
Originally Posted by rookie
Two questions if I may, and they are not loaded ones, I promise.
How much hp if any are you seeing with the Moroso 4-Vane enhanced Vac-Pump?
What valve spring do you run and how long do they live at those lifts?
I know that is one of the keys to good power, but most people are not willing to spend the money.
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I'm not Larry Meaux;however I hang around the dyno all the time!The hp gain with the vacuum pump depends on the size of the motor and how good it is sealed up!On a average I see anywhere from (8-20hp)on a small block and (20-40hp)on a big block!I have had good luck with the isky spring while others like the manley nextel springs!