how far have you guys successfully pushed a 6 rib setup? im at 13 now which is stock crank and 2.8 grooved on the blower. end of the year im going to put an OD crank pulley on i think and give it hell. there is something i want to make to get a ton of belt wrap on the blower but im wondering if i even need it. i get belt dust on top of my waterpump but i never seen it make any more or less then 13# so i dont think im really slipping, the grooves are just sharp

 

I'm at 12. Zero belt slip.

 

im at 12# now and whenthe truck gets back from the tuner it should be at 16#s with the 6 rib

 

sounds good. im pretty confident i can get it to not slip, im a bit more worried about breaking it, these green gates HD belts seem pretty f'in tough though

 

On what type of blower?

 

I see consistent 12-13 psi with 14 spike in cooler weather with 2.6 pulley / IW od crank balancer, I get slight dusting on top of water pump.

Also on my dyno pull you can see belt slip on top end. Since then I have added 100mm idler and gates HD green belt . So I'm sure that helped but I'm betting I still have slip , but it's not noticeable at all driving or wot runs.

I def would like to do 8 rib this winter and see if I can pick up any boost.

 

Different blower but I started seeing alot of belt slip with a 3.25" blower pulley on the KB. Would start out at 14psi and drop to 9psi by the top of each gear. This was also with 100mm idlers to get the most belt wrap I could get, ~60%.