I have a 350 block loaded on my engine stand. I was told the engine had been rebuilt within the last 2 years. I have the heads and the pan off. The bores have some rust on them due to sitting in my tool shed for some time with the heads off. But there is NO appreciable ridge at the top of the bores so it can't have too much mileage can it? The crank looks good, but I plan to pull a few caps and check the bearings. I also plan to check crank endplay (have to buy a dial indicator.) The cam looks fine, but I didn't take it out, it's still in the block. Looking at it through the lifter bores. It seems to me that I can get away with cleaning the surface rust and just running this bottom end with a new oil pump and timing chain. Is there anything I need to check to give me a better clue as to the condition? Now, I bought heads from a ck5 member and he said they were recently went through at the machine shop and had new valve seats placed. Then I let them sit in the tool shed and they got rusty too (I hate the Gulf Coast rust.) I'm not concerned about the rust on the exhaust side, but the intake side needs to be clean for good air flow, right? Could the rust have messed up anything internally or would they be OK to run? If my guesses are correct, I can get buy with a new gasket set, timing chain, oil pump, pushrods, and lifters. I have everything else. I want to run this 2-bolt engine for a while until I can rebuild my 350 4-bolt that's knocking. That one i will send to the machine shop to be ;leaned and honed and I plan on a 383 crank and Vortec heads. But I don't want the truck to be down for the months it will take me to build up the 383 Vortec (time and money constraints.) Any advise? -- Mike <font color=blue> The mud's on it to hide that it's more than one color.