My 1969 327 ci Chevy engine was professionally rebuilt in an engine shop. It is 30 over with a mild cam, 4bbl Edelbrock carb and about 1 hour total running time on a test stand. I originally put 10/30 oil in it and now I am wondering if it is too late..or time to put break in oil in it before the truck hits the road in a few months. I would appreciate recommendations.
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