Here is part of a reply to some one else I wrote--------------

I am asuming your cam has the spacer and thrust plate behind the gear. To replace the gear you get a grade 8 bolt from home depot to match the threads inside the cam nose, mine was 7/16 x 14 tpi. Yours may be diffrent but the grade 8 bolt is for safety so you don't break it off in the cam while you are using it to pull the gear on. Any way you put the spacer on first with the bevel towards the cam and then the thrust plate , if it is worn get a new one from ford for $8, then the key goes back in the cam, save the original key as they are no longer available from ford and they seem to be a hardened key. Start the gear on the cam and make sure it is going on straight , I made an aligner out of some scrap brass turned on a lathe so it fit inside the gear and had a hole through it of 7/16 to match the bolt. Start the gear by hand , it won't go far, find a heavy washer with the inside hole the size of your bolt and the outside larger than the hole in the gear.Thread the bolt in the cam nose and thighten away, a little oil is helpful, and you will pull the gear on the cam. Be careful of the following----- on my cam the nose of the cam stuck out of the gear about 1/32 of an inch when seated all the way, and there was very little clearence between the thrust plate and the cam gear. It should be .005 or something like that. Using the above method the cam will stop moving when the nose hits the washer. I noticed at this point that the trust plate
had a lot of clearence and I realised that the gear had to keep moving. I made a spacer about 1/4 inch thick to put between the
washer and the gear so the nose would pull through more, the inside diameter of the spacer was larger than the cam nose.

stractor

 

Very concise. I definately appreciate the help and the tip on clearance issues at the nose of the cam. Headed down to the shop to make that brass alignment tool now.