The motor is a 383,6" rod,Dart Iron Eagle Platinum Heads,small Howards flattappet cam,with alky carb it made 592 hp.This year im putting Brodix -10 aluminum heads done by Rons Porting Service and maybe switching cam,hoping to make 620hp. this year.I ran this motor in my Malibu the last 2 years and i bought a dragster for this season.Thanks