I'm confused what you're talking about with a "3-fold" pulley? Most I've seen use 2-groove pulleys. One belt for alt/water pump to the crank, one for the power steering. Or some combination thereof.

I would run anything directly off of the water pump, because then you need to be concerned with the pulley size you're driving off of. Pulley sizes were determined based on driving off of the crank pulley, so you need to keep that in mind.


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket