ok guys my imma change my power steering and alternator belt tomorrow.i have a chance to get a underdrive alluminum crank pulley. lightweight. from unorthodox racing.Should i get it?what are the pros and cons?

 

dont do it. Unless your ONLY talking the accessory pulleys in which case are just there for looks. But for an actual crank pulley they are not dampered on the unorthodox ones and they have do be otherwise you could have some major crank issues in the future. Either way id say its pointless.

 

+1 you have to think about the effects of underdriving as well. Depending on your power needs, under driving the alternator will have serious effects on your power output