Help! these pulleys are making me crazy

[Orange70chevy]

My power steering pulley does not line up what do I have wrong. I thought I had all the right stuff but I guess I don't.

['68OrangeSunshine]

I had a similar situation. I just put a double sheave on the alternator nose and used the forward groove.

[kwmech]

Wrong lower pulley

[Orange70chevy]

What does the lower pulley suppose to look like

[geunther]

72 350 pulleys.

[57larry]

I'd change the pulleys

[kwmech]

Originally Posted by geunther

72 350 pulleys.

Without AC

[Orange70chevy]

Ok thanks i guess i on the hunt for another pulley

[Ugly 61]

When I was putting my 72 GMC 1500 4x4 together I had a similar stiuation I couldn't find the proper pully for the power steering pump so I ended up using a 4 groove crank pulley and just left the 3rd groove from the inside empty. It works fine and I've never had a belt jump off
Ugly 61

[Classic Bowties]

Originally Posted by Orange70chevy

My power steering pulley does not line up what do I have wrong. I thought I had all the right stuff but I guess I don't.

If you are able to read the pulley p/n on your pump, let me know know the # and I may be able to tell you the p/n for the matching outer crank drive pulley. Mel

[Orange70chevy]

The part number is 3925537DC

[snipescastle2]

I have an extra set of pulleys I had powder coated black, when I get home from work this evening, I'll take a few pictures and post them.
If they might work, you can have them for the cost of postage.
Ben

[El Dorado Jim]

Originally Posted by snipescastle2

I have an extra set of pulleys I had powder coated black, when I get home from work this evening, I'll take a few pictures and post them.
If they might work, you can have them for the cost of postage.
Ben

that's why I love this forum

[snipescastle2]

I have to dig through my stash first thing in the morning, I remembered I moved a rubber maid tote out to my storage shed, And I'll snap a few pics showing the diameter and depth using a tape measure, perhaps that will give you a better Idea of whether these will work for you.
Ben

[kwmech]

Originally Posted by Orange70chevy

The part number is 3925537DC

That seems to be the correct number. The number matches one of my customers trucks.

[Classic Bowties]

Originally Posted by Orange70chevy

The part number is 3925537DC

Per our old archived short water pump pulley records, we have used your listed p/s pump pulley p/n 3925537 with outer crank two groove add on drive pulley p/n 3923898 on small block applications and also with outer crank single groove add on drive pulley p/n 3925525 on the big block applications. If you end up sourcing a different pulley setup, another very common small block short w/p pulley combo for p/s is pump pulley p/n 3993325 used with the outer crank single groove add on drive pulley p/n 3751232. Hope that helps some, Mel.

[Orange70chevy]

Originally Posted by Classic Bowties

Per our old archived short water pump pulley records, we have used your listed p/s pump pulley p/n 3925537 with outer crank two groove add on drive pulley p/n 3923898 on small block applications and also with outer crank single groove add on drive pulley p/n 3925525 on the big block applications. If you end up sourcing a different pulley setup, another very common small block short w/p pulley combo for p/s is pump pulley p/n 3993325 used with the outer crank single groove add on drive pulley p/n 3751232. Hope that helps some, Mel.

So this is the pulley I need?

[mike16]

Originally Posted by Orange70chevy

So this is the pulley I need?

interesting pulley. that puley is identicle to a pully used on an aftermarket ac unit instaled on my 68 k20.

I will burn off a picture of a correct pulley that may work for your alternator. its wider than a single groove style but not as wide as a 2 groove pulley. took for ever to find it but there it was, in a corvette catologe......and priced accordingly....ouch

[Andy4639]

Couple of my old setup.

[swamp rat]

I don't think you have the correct lower crank pulley setup on there now, can you take a better picture, a little closer with flash on the power steering pulley too?

[toolboxchev]

Looks like in the first pic that both the alt and power steering do not line up? Is that correct?

[swamp rat]

I have a set of proper pulley's in my garage and pictures on my home computer i can post later but they look like the set in post 5, the one set on the engine looks like its from a long water pump setup.

I am questioning you power steering pump, mounts and pulley at this point.

[swamp rat]

Here they are.

[Orange70chevy]

Its kind of a bad photo I took but the alt lines up just the power steering is to far fwd. What does the correct power steering brackets look like

[snipescastle2]

Mine aren't even close to that, much deeper on the bottom pulley, don't know about the water pump pulley, figures I forgot to grab them on my way out the door this morning.......
Ben
I'll get those this afternoon for sure.