I have an 04 Silvy w/Forged 370 LQ4 with a Whipple 2.3L. I bought the charger used and then I found out that Whipple no longer makes pulleys for my compressor (Lysholm w/dipstick) and i'm stuck with 6psi. So i'm looking for an overdrive crank pulley to squeeze more boost.
My question is:

Who makes a 6 rib underdrive pulley for my engine?!!! I can't seem to find any, they're all 8 rib.

I m deployed right now in Iraq and can't see my truck to confirm it's a 6 rib, but if I remember correctly it is.... any advice or part numbers would be awesome! Thanks guys!

 

They dont..Or did not when I was looking, I think the professional products one was a tad bigger...Look around on ebay or sell your blower and get a big KB...Good Luck , and thanks for your service

 

I don't think anyone makes a 6 rib over drive and to be honest you wouldn't want one. resale would suck. Most people that go over drive want 8 rib anyway and a 6 rib belt can be use on the 8 rib pulley (an 8rib just add 2 ribs to the front of the pulley). Also, check out Pulley Boys. They are in FL too and can most likely make you a smaller pulley for your blower.

 

^^^What he said.

 

I think you could run the 6 rib belt on the 8 rib balancer without any issues. Then its there for upgrading later or sell or whatever. I've used the innovators west and liked it alot.

 

x2 this is what i run on my truck, Just posted about this on another thread.

 

I suggest doing like others have suggested with a 8-rib balancer in case you want to upgrade later. Since you are not interested in an entire 8-rib kit, look into the Powerbond 10% OD 8-rib balancer. It is significantly cheaper than ATI or IW. I used the PB to piece together my 8-rib kit and it is a nice piece and looks like a factory item. Not everyone that carries Powerbond lists them though. I got mine from Byunspeed.

 

Talk to trick performance products, he can make pulleys and I'm sure if he had your current pulley, could make you whatever you want.