clearances look good. The parts dealer did mention there was a
early gear set and a late one, but only had the late one. It looks
like it gives you a little more clearance. I guess I'll run it till
I start hearing things.
Thanks again,
Mike
--- In classicmustang@yahoogroups.com, Flick01@... wrote:
>
> Last night I had the chance to speak with an experienced
Ford small
> block engine builder and I told him about your problems. Here's
the
> possibilities he mentioned.
> As Phil had noted, the rear cam plug could be set too far
back
> allowing the camshaft to travel towards the back of the engine.
That would pull the
> top timing gear against the head of the thrust plate bolts and
cause the groove
> in the timing gear. He also said it was very important to use the
original
> bolts in the thrust plate because there is only a hair's clearance
between the
> timing gear and the thrust plate bolts. He said sometimes guys
lose the
> originals and substitute regular bolts but the heads on regular
bolts are too thick
> and will scrape the back of the timing gear.
> He also said if the thrust plate is seated correctly then
the front
> journal of the cam has to be worn which would let the cam travel
too far forward
> and push the fuel pump eccentric against the timing case cover. He
said there
> was very little clearance between the eccentric and the cover. His
exact
> words were "You wouldn't want any part of your body between the
eccentric and the
> cover."
> Speaking for myself, I hope your problem is just worn cam
journals
> allowing the cam to travel too much in both directions but until
you measure the
> length of your journals against known good ones you won't know for
sure. My
> shop manual only gives specs for their diameter, not their length.
Good luck to
> you.
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