Vortech 2.87" 8 rib Pulley

[Jivepepper]

I have a Vortech 2.87" 8 rib Pulley. Couple minor scratches but if very good shape. 40 shipped.

[blkp42e]

how much boost is that worth with a 8" crank pulley also?

[Jivepepper]

how much boost is that worth with a 8" crank pulley also?

18 psi possibly depends on how free flowing your engine is. With a 3.0" and a 8" crank pulley I see close to 17 with a s-trim.

[blkp42e]

i see close to 11-13 or so with my 3.25 pulley.

[Jivepepper]

i see close to 11-13 or so with my 3.25 pulley.

What unit do you run? Maybe you have a leak or belt slip?

It's 1-1.5 psi for each step down. This would be 3 steps down. So 3-4.5 psi more.

[blkp42e]

S trim
3.25 upper i think is stock corrrect?
8" lower
Trick flow heads with a ported gt40 lower.

[Jivepepper]

S trim
3.25 upper i think is stock corrrect?
8" lower
Trick flow heads with a ported gt40 lower.

Mine was 3.6" stock at 6-8psi. Do you want it lol.

[Rodeheaver's]

i think that is more of a base line for were you can expect the boost to be, if i put your blower on my 460 with those pulleys it would never see 17lbs, volumetric efficiency plays a huge roll in this game..