Did you get any kind of warr with the engine? If it $#!T in only two hours run time......something is wrong. This happened to the 406 I bought. The guy had it in a Galaxie ran it for less than 500mi. Cam lobes spanked, pushrods bent. Big mess! He was so pissed he sold me the 406. You probably have all kinds of crap inside the block. Mine did. He might not have followed break in procedures for a solid cam or did not break it in at all. The first 20 min with a solid lifter FE are the most important for break in. Agressive solid cams that require larger dual springs need inside spring removed for cam break in. My 406 had a huge cam with the stock and original valve train. Cam bad, bent pusrods and valves whacked the pistons big mess. It's all being rebuilt to proper specs. Take a further look into it if nothing else is damaged maybe try a new cam and lifters before yanking it out. Do a few
oil changes to get some of the crap out and see how it goes. Cut open the
oil filters to see how much crap is in them and if it's less each time. Chances are you might have to pull it out anyway so be perpared. What are some of the specs of your engine? Heads, cam, valve train etc... something was not right to begin with and you will want to find out what before doing anything further as far as installing a new cam and lifters go. I'm really sorry to hear of your troubles. I replied to your post on the FF forum also. Good luck, Glenn.