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Discussion Starter #1
how much boost is lost by a set of underdrive pulleys? im looking at a vortec but they say it has a 12lb pulley on it but if my underdriver pulleys back on what would = in psi of boost? does any one know about the lost
 

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You'll lose a couple of pounds. Many will go with an overdrive crank on a supercharged app.
 

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Discussion Starter #3
I want to get down to 8 or 9lbs.. Do you think ill be getting closer to what i want with the underdrive pulleys...
 

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Discussion Starter #5
ok thanks for the snappy info

Bob
 
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