In 2004 when I built the 440/493, I drove it REAL easy during the first 500 miles, then changed the oil. In the next 2500 miles, it used oil, got slower and eventually started smoking . I pulled the motor out to hone it and put in new rings.
You left out that you ran a X number of cam lobes worth of metal filings thru it in part of that 2500 miles from 2 cams that went flat .....
Look at a race motor , break in the cam if a flat tappet .... then start racing it ...
GOOD Memory! I'm sure that the 2 dead cams added to my problems. Cant slip that by you, huh?
