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sbc rear main thrust bearing

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Ok was installing crank and went to check end play with no caps on yet and had hardly anything,felt kinda tight.I even smacked back n forth with mallet to help seat the thrust side better and still to tight.I can get feeler gauge in one side like 3/4" and on other side half way down before it gets tight. I didnt put dial indicator on yet but I cant feel much at all even when prying back and forth with bar. I went and checked on another engine same type still has short block together and feels the same. I remember reading I can just remove bearing and use like 400 grit sand paper and sand some off,just not 100% sure ok on these bearings,I did it once a long time ago.The engine was running and fine before tore down and all machine shop did was give a quick polishing.It got late so I didnt take out bearing to check for anything around or under bearing even though Im 99.9% sure is all good.What you guys think? I have .002-.003 in just one place not all the way around and will check more with dial tommorow but didnt feel like much or anything there.

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