[bsevans]

Here are two ideas for those that want to run the stock Toyota belt on their GM Power Steering pumps with 3/4" press on shafts.

The first solution I've posted photos of. It is a Toyota Power Steering pulley that had a keyed hub. The hub is welded to the pulley and is easily removed with a lathe. The photos are reposted below.

The second solution is the use of a four bolt smog pump pulley using a another custom hub. The hub is constructed from Corrosion-Resistant Aircraft-Grade Aluminum
Alloy (7075). 7075 is one of the hardest, strongest aluminum alloys and is ideal for high-stress parts. The hub utilizes the standard GM installation and removal tools for power steering pump pulleys. The hub has a centering step for the pulley and four ¼-20 tapped holes. There is enough material on the back side of the hub for another centering step which would give you four different locations for the center of the pulley as the pulley mounting flange is offset from the center of the v groove. I use the Classic Cruiser bracket that utilizes the two head bolts for my PS Pump. The bracket came with clearance holes for the head bolts and does not have slots like most other brackets. I just finished the hub tonight and will post pictures of it installed tomorrow.

The Factory power steering pulley is larger in diameter than the GM PS pulley I’ve been using by better than ½”. The Toyota smog pump pulley is only 1/8” smaller in diameter than the GM PS pulley.

Both Toyota pulley setups required a spacer for the factory air pump to relocate the pulley to align it with the front crank pulley in my setup.