Sodium filled valves a plus for a work motor. Like others, I would be worried about parts turning with no lube, especially the cam lobes. Shouldn't be hard to rig something to turn the oil pump with a drill and prelube before starting. Also squirt some oil in the cylinders and turn by hand.
The springs should be fine for what rpm that turns. Although fwiw I did have a 292 chevy out of a grain truck where it did have weak valve springs. I swapped on some used ones from a small block and got rid of some uneven running. The old ones, you could push open with your palm without much trouble. The new ones were a lot harder to push. I'm real scientific with my push-on-it-with-your-hand method.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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