My 360 sounds like a sewing machine

Got to it this afternoon finally.

And despite my paranoia, I had put the driver's side rocker shaft on backwards! D'oh! Moment for me . It looks like there was still oil getting up there from the pushrods (they are oil through) and nothing was galled. I fixed that, and put only 5 quarts of 10w-40 in there (dipstick read full) . Man did that quiet everything down! Cold or warm, all I hear now is the carb sucking air and my clutch fan...and of course, my exhaust. :) Thank you to the replies.