Originally Posted by VXCALAIS just finished tonight having my l67 running v8supercar spec 107 octane e85,my mods are 12psi pulley,60lb injectors walbro 450lph pump with yt 1.9 rockers how much of a difference did it make?
What size is a 12 psi pulley?
3.3 or something pulleys are graded by psi here in aus
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