Anyone that has this pulley, what gains do you get and is it noticeable gain if any? I keep seeing this pulley and have been interested in purchasing this but would like to know about it. Please let me know. Thanks

 

How much gain? I'm not sure, not much though (3-5hp) max. But i notice the throttle response is faster than before.

 

which pulley do you have because i know there is a alternator pulley and others

 

I have the whole kit

 

uhm...the 9.5 pulley is for the supercharger, increasing maximum boost pressure from 7 to psi 9.5 psi. it will make a gain of about 20 whp. but only if you actually have a supercharger.

if you're talking about the crank pulley, yes, it will give a slight gain in horsepower thanks to the reduction in parasitic drain and rotational mass.

 

i have 2 nst pulleys. The 9.5 and the light weight crank pulley. They are both great.
I took my supercharger off, let me know if you want to buy my 9.5 nst pulley

 

I was looking on nst website and there is a 55mm and a 65mm overdrive pulley fot sc. what is the difference between them?
Yea, I am interested. pm me

 

if memory serves me correctly, the smaller pulley is for 12 psi. you can run the 65 mm pulley without any other modifications other than the replacing the bypass valve. but for the 12 psi pulley, you'll need some kind of engine management, and maybe larger injectors.

 

Ill just go with the 9.5. I would love to get the 12.5 but i don't have the money to replace the injectors right now. Thanks