B&M 420 Mega Blower Pullies
 

I need two... I'll get measurements...

Mine are stock from the 600SC... I'm looking for smaller ones...

I think the ones from the 800 SC were a bit smaller...


Update. Mine are 5.0 so looking for something under 5 inches.

I have two 5.375" pullies that I bought from teague and used once

Let me double check the size

Correction they're 5.9" from the blower shop. I replaced them with the 5.375s. Still in the boxes they came in

Are you looking for the upper or lower pullies? I have a few upper ones but I need a lower..

I'm looking for upper pullies. Mine are 5.0. I need something a little smaller.

Are those lower or upper pullies Rbesola. How big are the opposites?

Those numbers seem big. I'll have to measure my lowers. There at the engine builder. My lower look to be one piece with the v groove for the water pump.

Can you let me know how big they are? Sorry can help you with lowers.

Up up

i have a pair of lowers fora stock 600sc with v-belts..

You are looking for 10 rib pulleys. Rbesola has 16 rib pulleys.

Tough call on what to do there.

You may be able to buy a traditional triple vee groove pulley, like you would use on an 8-71 blower. Then find another set of 600sc top pulleys, but mount them on the bottom. This would change your current ratio from .93:1, to 1:1. That should net about 2 more psi than what you have now.

Sorry for the delay in responding. The upper ones I have are 16 rib part numbers are 155174..8901568..155172..155175

also try
https://www.facebook.com/groups/1017...89888/?fref=nf
and
https://www.facebook.com/groups/Racingjunk/

Joe,,,

So you're thinking... With the normal lower 3 grove on the crank... Another set of 600 uppers would blot right to that setup on the crank?

I'm also wondering if I could run the 16 grove and only use 10 of the groves? But not sure how much that would help me since most of the 16 grove pulleys seem to be bigger than 5.0 and not smaller.

Is there any way to change this to the COG setup? With out spending a fortune?

Any of these pulleys still available. I am still running stock 600 sc pulleys. Looking to go up on the lower or smaller on the upper. Just trying to boost up 2lbs to 7ish. Thanks Jeff

Anybody still have any lower pullies and idler setups. I need two of each.