has anyone ever rebuilt a 350. well not really rebuilt but strip down to bear block and clean. i looking for a range for cost on stuff like gaskets and other various thing.

the truck i am pulling this out of is a 1971 custom 10 i just bought and the engine is a built 350 but it does not run the guy i bought it from thought it might be a rod about to blow by me and my father were tinkerin with it and we think it might be the vavles cause 3 or 4 of the cylinders are not burning so the sparkplugs are really wet and the rest are burning incredably rich. so we will probably have to rebuild the heads and i was contiplating just tearing down the whole engine so we know what was done to the stock block and what else was wrong with it. but i'm not sure if it is worth the time the money or the hassel to tear down the whole engine when i could just rebuild the heads.