February 23, 2011i have a 96-98 vortec 5.7L with a procharger. i am running a 3" pulley on the stock pulley system, which is a 6 rib. i am wondering if and where i can find a full system of 8 rib pulleys? or is it possible to use pulleys from another GM car, such as the lt1 cars or even ls powered vehicles? any information would be great, id appreciate it. thanks for your time
Forums : Aftermarket : 8-rib pulleys (1571 Views)
February 23, 2011Can`t help you with the pullies, but welcome to the site. Maybe a little more of the issue why you want/need the 8 rib might help too. Are you trying to put a band-aide on an issue or is there another reason.
Welcome to the site!
February 23, 2011no bandaids, just wanting to create a bigger belt surface area for more pulley bite, i have a big centrifugal blower on my truck, and a small blower pulley (3") on the stock 6 rib pulleys. i havent totally finished the thing yet, needs to be tuned, but it should make 10-12 psi, and i dont wanna lose anything to belt slippage.
and thanks for the welcome! good to be here!
February 23, 2011corret me if im wrong but isnt a 3 inch pulley one of the biggest you can get?
the only reaon im asking is because the way most prochargers are set up the pulley goes around 3/4`s of the pulley, so there is a fair ammount of surface area.
not sure of the brand name but i have seen separate pulley systems just for the procharger.
February 23, 2011try checking google, search procharger stand alone pulley system
February 24, 2011Might look this guys web page, he has been around here a long time and has just about the same set-up as you.
February 24, 2011This is his most recent report on the truck.
February 24, 2011thanks fellas, thats all very helpful info, itll keep me busy for quite awhile! and i will check that other fellas profile out, he has the tbi injection, but its very possible that he could have some infromation for me!
oh, and matsktr, the 3" pulley is one of the smallest pulleys that procharger makes, because its so tiny, the belt has no way to get a good grip. the belt only gets to wrap a little over halfway around on my setup, and thats the problem. once that blower goes into boost, it could throw that belt, or turn it into a squealer real quick.
February 24, 2011i have dealt with the problems and in doing so created one too..first dealing with slippage..i had a altenator pulley machined for a bearing, the one that all the idler ones have, they are actually, altenator bearings...then mounted the machined bearing after the blower for a tighter wrap on the supercharger...the problem i created was i went to a 3.10 custom pulley with grooves and in decelertion it shredded the belt...i was also running a BOV not a by pass valve....changed back to the bypass...haven`t tested it yet...pics can be seen on photobucket...search low4x4
February 24, 2011
you can see how much more wrap the belt makes around the supercharger
February 24, 2011ive had problems in deep waterw with the belts slipping when it get wet. but i think a stand alone belt is the only thing you an do to help that. there are some wider belt systems i think, but im not too familiar with the onfiguration