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What is the ratio of the 9psi pulley (2.70/2.93/3.12)
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It sort of hard to determine what exactly is the size for 9lbs. I don't have one but mine is supposed to be 6lbs but when the belt is new it makes 7-8lbs of boost and the pulley size is 3".
I remember James was experiment with different pulleys to find out how much boost one would make. I remember he installed a 9 lbs pulley on Ed's car and that thing made 12lbs of boost when the belt didn't slip. He also average a 10lbs of boost at WOT. But in time the 9lbs pulley will slip alot. So just experiment with it. The 2.7 is for 11 lbs, 2.93 is for 9 and 3.125 is for 6. How do I know this, because there is a Stang here that used all these pulleys. But I could be wrong ofcourse on psi when it comes to our cars.
1998 Firebird . 1989 Firebird XS . 1986 Fiero GT
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