Vintage Air Pulleys?

[damnyankee36]

I am planning a Vintage Air system for 66 SBC, short water pump, factory power steering, passenger side mounted compressor. The kit doesn't come with drive pulleys.

What has everyone else done? I don't know if it's a simple matter of adding a single groove crank and water pump pulley or if I need complete new multi groove ones.

It looks like the other AC manufacturers don't include pulleys either!

[roll_the_dice]

I just looked and Vintage air has compressors with different pulleys...you may be able to match one to what you have now.

[AcampoDave]

When I did mine (a short pump, passenger side compressor w/power steering) I needed a double groove on top and a triple on the crank. GM still makes the top one and my local O'Reilly's had it (and a Mr. Gasket.). I could not find a steel triple groove lower one anywhere so I bought an aluminum one off of E-bay. The double upper pulley diameter is smaller than the old single and I couldn't find one in the larger size. It really spun the heck out of my flex fan so i switched to a clutch fan to slow it down a notch or two.

[damnyankee36]

Thanks guys. Just found a triple crank and double water pump for a short pump at Summit. Easier than I thought it would be!

[The Rocknrod]

I'm using Alan Grove brackets. On their web site they have pulley information and info on types/years of power steering pumps, they also show pulley alignment diagrams for various scenario's broken up by short or long water pumps, small or big blocks. It was easy to find the pulleys with that info in hand using they're brackets.
http://www.alangrovecomponents.com/S...Short_Pump.htm
Diagrams for components - http://www.alangrovecomponents.com/Important_Info.htm
Pulleys - http://www.alangrovecomponents.com/Pulleys_2011.htm

[damnyankee36]

Thanks Chief! I used these guys for a compressor bracket on an LS engine but I forgot their name. I'll check it out.

[spudder]

Factory GM short water pump pulleys were used from 1955 through 1968 on passenger cars and through 1972 on trucks. There were all different varieties. Water pump pulleys were either 1 or 2 groove and lower crank pulleys were either 1 or 2 groove depending whether the vehicle had AC. If the vehicle had power steering, there was a separate single pulley that "piggybacked" the lower crank pulley for the power steering pump. Also, the pulleys came in several different diameters.
To my knowledge there was never a triple lower or upper pulley in cars or light duty trucks.
These pulleys are still pretty common, I would try to find them rather than using. aftermarket parts. Especially if you are using factory brackets for alternator, AC and power steering.
I've seen way too many mismatched parts that create lots of problems!

[damnyankee36]

My truck had a factory cast 2 groove crank along with a single as you described. The single was against the balancer.

The one I found at Summit is one-piece unit. (Obviously not factory configuration) That's OK as long as it's dimensionally the same that will work for me.

Hopefully, the double water pump will also be the same.

[The Rocknrod]

The other thing you can do is get a small light pointer that fits in the pulley groves to align your pulleys instead of getting 'close'.

[damnyankee36]

That's sounds interesting. Any details on how that works? I can envision a skinny laser that would somewhat fit in the groove to point at the other pulleys.

[damnyankee36]

Jeeze. I just did a quick google on laser pulley aligners. Prices are stupid high. Looks like it's time build one!

Found tons of pointers on eBay that look small enough to fit inside the groove.

I guess that's what you were talking about. Nothing that's purpose built.

[The Rocknrod]

Ya you don't need an expensive contraption. Just a small pointer.