I drained the engine oil Sunday. i haven't refilled it yet. i thought I'd get some really light weight Castrol (10w-30) put the normal 5 qts in, start the engine and let it run up to normal temps. Then add an extra 2-3 qts as you said. Is it a good ideal to put a small amount of oil in the coolant and let the oil coat the engine coolant passages? I'm going to leave the carb on so everything is together.
you still need to basically cover the surfaces inside and outside the engine with clean fresh oil/grease, back off the valves (rockers) to release the pressure and FILL the sump with a few extra qts of oil to keep the bearings submerged,cover every part to prevent moisture from reaching the engine AFTER draining all the coolant from the block and making sure the coolant passages are dry (trash bags duct tape and plastic wrap at a minimum) a larger air tight box if you can find one over that helps