Need advice on what size blower pulley to buy

[mike9250]

I'm currently running the standard 3.33 / 6.87 pulleys that came with my kit. With that set-up and a UPR Powerpipe, I'm seeing about 8 psi. I would like to make slightly more boost , maybe 10 psi. What size blower pulley would I need? Would the 2.95 be too small? I see there are 3.12 and 3.00 pulleys available also. I'm gonna stick with the 6.87 crank. The engine is a DSS 308 with ported Edelbrock Performers, an Extrude Honed Cobra intake, and all the other typical parts. Thanks

[tstang]

you can always call Vortech direct they are very helpful and you'll get your answer right away all you need to do it give them a base # which you already have. Sumit has the pullies like $10 cheaper than Vortech if your interested. Good luck

[Chuck]

I would get the 3.12 pulley, It will get you 10#'s. I had a 3.00 and I was seeing 13#'s but my belt was really tight.

[RdRunnr]

I agree...3.12 will get you exactly what you need..

[mike9250]

Thanks for the help guys. I noticed that on Vortechs web site, they list the 3.00 and 3.15 pulleys as being for EFI/Renegade. It says something about being an improved traction profile. I'm looking at one of their pulley packs with the 3.15 blower pulley and an underdrive crank pulley. Will this work even though it's listed as EFI/Renegade? They don't offer a package with a 3.12 blower pulley AND the underdrive crank for some reason.

[midnight]

Thanks for the help guys. I noticed that on Vortechs web site, they list the 3.00 and 3.15 pulleys as being for EFI/Renegade. It says something about being an improved traction profile. I'm looking at one of their pulley packs with the 3.15 blower pulley and an underdrive crank pulley. Will this work even though it's listed as EFI/Renegade? They don't offer a package with a 3.12 blower pulley AND the underdrive crank for some reason.

YES!!!!