While taking a break from the seat backrest upholstery this morning, I took another look at the steering pump mounting. And after a bit of head scratching and tweaks, I'm pleased with it all now.
Getting this all sorted was a lot more hassle than I expected. GM must have equipped millions of long water pump small blocks with both power steering and A/C. So getting everything to fit and line up is not cutting edge stuff, but should be very routine.
Here's what I came up with in the end:
- Saginaw pump for bolt-on pulley (Performance Online)
- Steering pump bracket kit for long water pump (Alan Grove Components, #402L)
- Aftermarket factory-spec 2-groove steering pump pulley (GM #3941107)
- Used factory 3-groove crank pulley (GM #3972180)
- Existing factory long water pump 2-groove pulley (standard early '80s GM part)
Even with all this, mostly factory parts, I had to re-engineer the pump mounting a bit. While AGC says their parts are designed to use factory pulleys, when I mounted the pump per directions, the groove alignment was not correct (too far forward by about ｽ a groove). Luckily, the design of the AGC brackets allowed me to substitute different spacers to move the pump back about 5/16". That made it all work.
Will be moving on to the rack and pinion mounting soon.