Alternator pulley

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I have the correct fan and spacer, do I need a specific pulley then if they have a spacer already on it or does it matter?

Who sells the correct pulley?

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Steve,

We have the pulleys (see above.) If you have the flat fan, use the earlier pulley:

http://www.virginiaclassicmustang.com/STEEL-HI-PO-AL…NISH-P1113.aspx

If you have the fan with the indentation in the middle, use this pulley:

http://www.virginiaclassicmustang.com/STEEL-HI-PO-AL…NISH-P1111.aspx

Brant,

You are probably correct as regards two different thickness

of the built in spacer on the -C and -H respectively.

I don't remember how thick the spacer is on the backside

of my pulley and it can't be seen when mounted.

/Bo

Edited by - BoS on 12/03/2010 18:48:24

Here is another twist to the C5AF10A352-H pulley. I have come across two that I believe to be original that do not have the recessed area on the back. They are steel and flat across the back until near the raised center which we are calling a spacer. Below are pictures of the pulley (it has been bead-blasted):

Front

[Blocked Image: http://www.fordsmallblock.com/Pictures/Steel-alt-HP-front.jpg]

Back

[Blocked Image: http://www.fordsmallblock.com/Pictures/Steel-alt-HP-back.jpg]

Stamping

[Blocked Image: http://www.fordsmallblock.com/Pictures/Steel-alt-HP-C5AF-H.jpg]

The "spacer" fit completely within the recessed area of the fan and the pulley back was flat to the front of the fan.

As Brent mentioned, I recall that the C5AF10A352-C pulley had a smaller step (spacer) and its back was slightly above the face of the fan.

If others have seen a pulley like the pictures I show, please indicate the car it came off of.

My Mustang has a -H pulley that is flat across the back...Dearborn, with June 65 production date. The curved impression stamp is closer to the center than the one shown in your pictures. It was with the car when I purchased it 12 years ago, so I'm assuming it's original.

My mid April '65 Dearborn car has an H pulley, arched number, flat back with raised spacer, number closer to the centre than in Bobs pic. Dont know if it is original or not.

My July/Aug 64 Mustang has the C pulley.

Close like the following?

[Blocked Image: http://www.fordsmallblock.com/Pictures/Alt-HP-style-two.jpg]

Edited by - bobmannel on 12/03/2010 17:08:14

Yes I believe so. I can confirm if you wish but its getting late here and to damn cold to go outside.

Bob,

No. The stamp on my pulley is right up against the counterbore and although it is curved, it's not concentric with the centerline of the pulley. It would be if it was further out from the center. The picture I took is fuzzy, but I think you can see where the impression stamp is relative to the bore.

http://rides.webshots.com/photo/2535475170080259586noqhbh

Edited by - MTS on 12/03/2010 21:52:00

Edited by - MTS on 12/03/2010 21:53:25

Took a pic this morning.

[Blocked Image: http://i561.photobucket.com/albums/ss52/cobraboy1/DSCF0770.jpg]

An oddity about the original -H pulley. All originals

I have owned and seen have the H stamped very weak and

hardly visable in most cases. Anybody else seen this?

Nowadays it's quite difficult to separate the best reproductions

from originals as both location and font on the numbers

are so close.

/Bo

This is all good information and I think shedding some good light on the truth. The C5AF10A352-C pulley was only in service for nine months or so, so seems to have good consistency as to its design. The opposite seems to be true with the C5AF10A352-H, which was in production for many years, then service beyond that for many more. Most of the alternator pulleys in the 1960s were made by two vendors. There seems to be a lot of leadway given by Ford as to how they could be constructed as long as the critical specs of diameter, groove size, and position were correct. But, even if the -H pulley had but one manufacturer, the length of time could have contributed to the variations. Making matters more complex is the number of well made reproductions.

So far, it seems there are two different fonts of stamped numbers. The fonts look almost identical, but there are very slight variations. You can see the slight difference in the length of the top hook on the number "1". This simply means the stamping tools were not the same. There are different positions of the stamping. One is about 5/16" from the recessed hub. Another is about 1/8", yet others are even closer, though the arc indicates it should have been further from the hub. Whether these variations occurred all at the same time, or very sequential remains somewhat a mystery. Only known original cars can unlock those secrets.

And, I think we have confirmed the two differences on the back side of the pulley. One that is flat, and another with a slight recess. The question might be whether the recess is a variation from the beginning, or a change that occurred later.

Anyone have a correct flat fan and spacer available ?

Thanks