The Lincoln mark VIII does draw 80 amps on high speed at start-up & 40 at steady running. Low side is 40 & 25. amps.Below is some info on this fan & wiring a fan using 2 relays. This fan has been talked about on this forum & the amp draw has been substatiated .http://alanhorvath.com/54chevy/mad_electrical_2.php

Don Meyer, Mech Engr- retired

I did not find any 40 amp fans on the above posts..........thank-you