how much boost from a 3.2 to a 3.1 pulley?
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You will more than likely have belt slippage problems going any smaller than a 3.2 on the pulley. You would be better off finding a larger crank pulley. ASP makes them but they are not cheap. Bob
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i have the 3.2 on there now and like you im making 6.5-7 psi, im going with an 8in crank pulley and hoping for 9-10 psi, ill let you know how it turns out, if you do go with a 3.0 pulley let me know how much slip if any you get please