Calling pulley experts!

[patrickdotryan]

Hi, in a post the other night I had some confusion as to why my crankshaft pulley/s wouldn't fit after a rebuild. I had dealer a/c fitted and so the pulleys no longer make sense after I removed the dealer a/c. My setup now is a stock 390 with stock harmonic balancer and only factory power steering with this bracket:



From what I can tell, all the crank pulley needs to do is: First sheave / groove (closest to motor) - turn the fan / Water pump and alternator. 2nd sheave / groove (closer to radiator) - turn the stock power steering pump. The pulley that runs the fan/waterpump and alt should sit almost right against the balancer but it looks like the p/s pulley needs to be spaced away from the motor a bit. My question is, on the following page -

http://fordification.com/partnos/pulley ... haftFE.htm

- which one is the right pulley for me? My truck is a stock 1971 F250 Custom with 360 (now 390) and factory p/s. No smog gear, no other options (other than power brakes). Depending on how I read it, there is more than one choice. Can someone who knows more about this please help. And of course then I need to actually FIND one...

Thanks
Patrick

[duaneo]

For what it's worth, I think my truck at one point had a dealer add-on ac package that was taken out. I have the same PS assembly that you have. In my case I had an extra pulley for the AC that was bolted on top of the factory pulley. The factory pulley had two sheaves, the inside for water and alternator, the outside for the power steering. The third pulley/sheave is unused in my case, and I think was for AC.


The one on the left is the factory alternator/water/PS pulley.
The one in the foreground is the fan
The one in the center background is the AC pulley, which I put on, even though I am not using it.

Here is a decent shot assembled without belts



here is a shot assembled with belts



I'm sorry I don't have any part numbers. I'm hoping the pictures help.

Cheers,
Duane

[duaneo]

Oh yeah, that's an all stock 360 in a 71 F100 Explorer Custom.

[patrickdotryan]

Duane, first that is beautiful. Nice job, that is exactly what I'm working to acheived. Motor and parts mostly done but engine bay still to go!

That crank pulley on the left *looks* like what I imagined in my mind. The one I have attaches with the crank bolt through the center. When they rebuilt my motor, the female indent in the new crank nose or keyway piece (terminology?) is smaller in diameter than the male part of the pulley (don't ya hate that!). What you have there doesn't even need the center crankshaft bolt, there is just a wide clearance hole and it bolts to the balancer with the 3 perimeter bolts. Way simpler. And the p/s groove looks like it's spaced away from the motor enough (I know, very scientific).

So, FOR THE GROUP, is that part number C8AZ-6A312-C (5th row down) or C8AZ-6A312-D (6th row down) on this page http://fordification.com/partnos/pulley ... haftFE.htm and is it correct for my truck (seems like it)?

FOR DUANE - I looked through your photos, EXACTLY what I've been doing, part for part, wish I found your shots earlier. I'm assuming your truck was built in San Jose also? Also, why were you removing the pulley from the power steering pump?

Thanks,
Patrick

[duaneo]

Haha I forgot that the whole photobucket stream is public. Not that I'm bothered, I just haven't gotten around to putting together my build thread. My truck was made in SJ. It's still close to home.

The little story there is that I decided that since I was replacing engine components, I'd replace the alternator, PS pump, etc. The new pump doesn't come with a pulley, so I had to remove the pulley from the old pump. No problem, bought a puller, and removed it. I wasn't entirely paying attention when it came to installing the new pulley, and found it strange that I was having so much trouble getting the new pulley on. I had to put a LOT of force into the kit. Then (too late) I realized I had put the pulley halfway on backward. The part that really stinks is that the puller attaches to the pulley via a lip on the front. That lip was now on the inside, and doing me absolutely no good. I cobbled together a "puller" using a couple of wrenches, some hose clamps, some clamps, and parts from my harmonic balancer puller. I was able to get it off, but it was definitely tricky.

Here are the photos for those that don't want to browse my bucket.

This is the center piece of the harmonic balancer puller clamped to the pulley, with the pulley still attached to the pump.


Here is the pulley still attached to the puller sans pump


Here is the new pump (finally) sans pulley and waiting for proper pulley installation!


Next time, more attention will be paid!

Cheers,
Duane

[patrickdotryan]

Thanks Duane, sorry about being a stalker! Just I had never seen a truck so exactly the same as mine. I mean every little water distribution block, the brass vaccum block and everything is identical. You have some of the original things that were modified on mine that I'd like to put back correctly also, like the metal fuel line and that kind of thing. I can clearly see how yours is routed, so very helpful.

Just gotta figure out the part number of (and how to get) the correct crankcase pulley. Thanks for the help.

Patrick

[patrickdotryan]

Duane, any chance you could measure the depth of that pulley from the lip that is closest to the motor to the lip that's closest to the fan and then the space in between the two sheaves? That would be awesome. Patrick

[BobbyFord]

...Here are the photos for those that don't want to browse my bucket.

This is the center piece of the harmonic balancer puller clamped to the pulley, with the pulley still attached to the pump.
[ Image ]

Here is the pulley still attached to the puller sans pump
[ Image ]

There's a whole lot going on in those photos

[duaneo]

Ok Patrick,

Here are some "action shots" of my pulleys. I don't have any calipers so I don't have a way to measure the diameter of the inner pulleys.






The last one is a little blurry but it shows about 8 1/2" from the harmonic balancer to the radiator, and roughly 3 1/4" from the harmonic balancer to the outside of the third pulley.

Cheers,
Duane

[duaneo]

There's a whole lot going on in those photos

haha true. My shop isn't going to be on any reality tv shows any time soon unless there's a "tool hoarders" show out there I don't know about.

Cheers,
Duane

[patrickdotryan]

Thanks Duane. That's exactly what I need. Patrick