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Discussion Starter · #1 ·
do any of you know the formula on how to find out how much boost i would be making relative to the crank pulley size vs. supercharger pulley. i have heard an f-150 crank pulley is 6.5 inches and the stock 5.0 pulley is 6 inches. i have the stock 3 inch pulley and was wondering how much boost i will be making if i change to an f 150 pulley and also what year f 150 do i need to take it off of? oh i have a paxton novi 1000 on a fox 5.0 by the way and right its boosting 5.5 psi. also do any of you guys know who sells a good boost sensative adjustable fuel pressure regulator (the one with vacuum going to it to sense boost) thanks again
 

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and if you really want to see some boost, go with a 8inch crank pulley ;)
 

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Are you running the 6 rib or 8 rib Novi 1000?

I have a buddy with the 8 and an 8 inch crank pulley running 12.4 @ 119.5 on street tires at altitude in Edmonton. He also has a powerpipe, which would be something else to consider.
 

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Discussion Starter · #6 ·
what about adding a pulley? which one would i want to go from 5.5 to 8 psi without the crank pulley?
 
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