Sounds like the cam to me!
On Wed, 8 May 1996, Ernest E. Gilbert wrote:
> I took off in 1st and wound to about 5K. Shifted to 2nd and as I applied
>power a definite knock appeared. Knock disappeared coasting. Knock is related
>to power, Knock is not as solid as a rod but definitely substantial. Engine
>did not idle unless some extra fuel was added via the choke but otherwise
>still ran fairly smooth.
>
> I babied it home about 2 mi and the temp was beginning to go up unusually for
>the circumstances. Also was loosing more power as I drove. Oil pressure stayed
>good.
>
> Took off the valve cover. Some, not all, tappets now have as much as 1/8
>clearance being more pronounced to the rear, but the rearmost is normal and
>the extra clearance does not graduate evenly from tappet to tappet. No bent
>push rods. All valves seem at proper level (no missing seats) and all rockers
>and valve stems operate properly when I turn it over. There are no loose
>adjusting lock nuts or other fastners. No knock or other special noise while
>turning over with the starter. No water in oil or vise versa. Havn't done a
>compression test yet.
>
> Please, anyone got any ideas before I tear it out?
>
> Ernest
> barrister@lawref.com
>
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