Atomic

iTrader: (42)

Use the stuff on the bottom right of that tab, then take the equivalent normal pulley (on the far right in that section) and use that as the input to the main table.

shaw_426hemi

I've run 3 pulleys on mine but I think just the below 2 with the 10% OD and I have seen the following PSI at around 25-30 degree F ambient air temp. I expect it to drop come warmer weather, just built it over the winter.
L9H (376ci)
Boost cam, headers 4" exhaust
3.2"- 10 psi
3.0" - 13-13.5psi

terravast4

iTrader: (25)

do you recall what belt you ran on on the 3.0 pulley?

SleeperGMC

Just installed the 10% Innovators West 8 Rib kit couple of days ago... Truck will be running in a week or 2 should have exact numbers for you then.
Going to start with a 3.0 pulley to get back to the 10.5-11psi I was at before.

terravast4

iTrader: (25)

please let me know what belt you run and PSI. thanks

SleeperGMC

I did some test fitting with the 3.0 pulley and the best length I could find was a Gates K081088HD.
I will let you know boost levels in a couple of weeks when it goes on the dyno again.

Atomic

iTrader: (42)

Keep in mind with the ability to adjust the pre-blower idler and the tensioner position the belt length required is usually pretty flexible with these blowers.

03sierraslt

iTrader: (22)

Yep. I've always used a K081088 and a K081092 depending on pulley

terravast4

iTrader: (25)

thanks for everyones help

Blown06

iTrader: (32)

Never really thought too much about it, but adding a manual tensioner and using it in conjunction with the spring loaded tensioner is a great idea.