is there any difference between the zpi s/c pulley and the nst pulley?

 

zpi is a lightweight

nst is a undrdrive.

i think.

 

he's talking about the Supercharger pulley (notice the s/c in his post).

I don't really know of any differences between the ZPI and NST s/c pullies besides the look of them. That and NST has been around for a really long time and is a trusted name by many people (not saying that ZPI is bad).

 

ZPI 9psi
NST 9.5 psi

 

NST is much more accurate. Old S/C tC I used the ZPI Crank and "9psi" pulley and it didn't go anywhere over 8psi.
Went NST and used their Overdrive pulley and 9.5 psi pulley. Happier and more power from the NST pulleys. NST is the guys for pulleys... period. No questions

 

I have the s/c zpi pulley and I hit 9 psi. 223 whp with 192 Torque

 

What did you put down?

 

nice numbers! on what type of dyno?

 

watching.

 

.5 psi... Duh lol

 

Dyno Jet

 

I ran 252whp / 212tq with an NST pulley and supporting mods, I highly reccomend the NST That was also on a dynojet.

 

How much did that custome intake help you out? Could you check on my set up and do you think that intake is helping me any?

 

To answer blownupmarine, I put down 225hp 195 tq on the ZPI pulley, DC 4-1 header, TRD exhaust. With the NST pulley, Intake, Header I put around 232 and 200tq. Forge 007 BPV was on as well