Thanks for the info,I put one of these fans in my dart with a 383 and it works great,had this fan laying around for a year or so. I instaled it about three months ago,wired the pos side switched w30amp adj relay and close looped the small wires..it works but things(wires & relay) get a little warm..fan will fit in abody big block with slim radiator im using 04 mustang with 08 c350 fan...have 1/8 or so fan to pump.