I just bought a 1958 F600 with 50,000 miles on it. The truck had not run in 4 years so I drained the old gas out of the tank and rebuilt the carb. The engine fired right up but I could hear a lot of valve noise. When I pulled the left valve cover everything looked pretty normal. The right side was a different story- there were only 3 pushrods in place. I pulled the rocker shafts off and found the #1 exhaust rocker arm extremely loose on the shaft. I pulled it off and the hole is worn oblong. I went ahead and pulled the manifold and valley cover and found the pushrods in there. 2 of them are broken and one of the broken pieces (about 2" long) is missing. Could it have fallen down into the oil pan? There is a mixture of small and large diameter pushrods.

I can run a wire down into the oil feed hole in each of the heads about 4" and then it hits something solid like the head gasket. Should the wire be able to go all the way to the camshaft? I have cranked the engine over with the spark plugs removed and there is no oil coming out of the rocker arm feed holes. The oil pressure light goes out when cranking.

What should I do now- go ahead and pull the heads or replace the rocker arms and pushrods and see what happens? 

Thanks for the help,

Alan