i'v hot a b18c with a vortech charger on it and its running directly off the ac pulley on the crank.am rebuilding my engine so i could run high boost but to run my charger to it full potential (23-25psi) am gonna need to get a bigger pulley to replace the one that my ac usually runs off.do you guys know how to accomplish this? i have bin looking at after market crank but thay mainly seem to offer lighten crank pulley.

any help would be great full

 

ls crank pulley has a bigger a/c pulley

 

ok thanks.any other engine you know of that has a larger stock crank pulley for the ac than the b18c?just wanna keep my options open

 

I'm fairly certain the B20 damper has a bigger outer diameter.

 

if you want to sell your stock GSR pulley let me know, i need one, mine is beat to hell.

 

IIRC, the B20 is the biggest OEM B series pulley.