I have a 3.25 pulley on the blower now. I have a 3.5 if you guys think that will be safer. 550/505 right now. Any idea on new #'s if this setup is ok? I have the alternator pulley also. Thanks.
If you put a 4lb , wont you hit 21lbs? With your current setup. Im making close to 19 lbs with just 2.76 upper only
17 lbs. Maybe get a 4lb?
I run 23psi on a 2.2L KB....2.76 upper with a 4lb lower.