well i'm going for reliability - no more than 6300 ( due to cam only ) engine is a 468 four bolt with a steel crank cross drilled and chafferd ( sp ) howard hd steel rods-dport heads crower rockers h-d comp hd pushrods - rockers girddled down graded to a custom ground iskyhyd - 598 lift 114 lobes ( i forget the exsact duration - but i think it was around 286 ??? dont quote me - 14 quart oil with tray and baffled and a lil tinney wanna be blower ( 177 ) and a mallory mag four - locked out - when the motor had the roller in it it saw 8500- thus the new h/d push rods -- my daughter wanted to ski and knee board and i currently do not have a nice garage ( new house ) so i wanted to go slow ... lmao --