Hi guy's I'm new to this site I have been meaning join but simply just keep forgetting to. Any way I'm currently building a 220 fed blown, inj, 509 bbc ,w/glide .I need a little info on choosing the right pulleys to get me around 22 23 lbs of boost my basic engine specs are 4.500 bore 4.inch stroke 11.4 static comp. Brodixbb3x heads 390cc 871 littleifield w/ an enderle hat any help would appreciated thanx brian