Thread: Not sure what pulley size to get

3.4 pulley here same setup as you, gen v stock heads, n*, headers, Catback, 103, intake, ported lim, 60 injectors, and this is on 91oct. If you have 93, I would just add more timin to it. Personally.

Yes I have the vs cam. Will be running a 3.2 but on e85 and a 3.4 on 91oct.

I believe it is around 8-10 psi of boost 10 being the max the car is sitting due to my tranny going out so I literally drove it for about 2 weeks once the tune got done. Personally if I were you buy a 3.4 and a 3.3 and a 3.5 to be able to switch them out and see which works best, because at the end it isn't the size of the pulley but other factors that make a bigger difference like timing.

Just a thought. Not something that has to be done.

Originally Posted by camopaint0707

Problem is that zzp's modular pullies go from 3.4 to 3.25

Huh? You can get a 3.25, 3.2, and a 3.1.

You can get a 3.3 and I believe a 660 belt will fit all pulleys from a 3.2 - 3.5 so no need for a belt per pulley...

Click on the drop down, Intense has 2.5 - 3.6 all in .1 increases. Intense pulleys will fit on ZZP hubs as well and vise versa.

INTENSE-Racing.com: INTENSE™ Eaton M90 Individual Modular Supercharger Pulley

http://www.grandprixforums.net/engin...hart-2486.html