520 cube BBM MotorTrend

Had a 528 cu in made 844hp at 7200 684 tq at 5600 13.5 to 1 741 lift cam with tunnel ram 2 1000 cfm carbs 440-1 heads. New motor 572 cu in 877 hp at 7200 738 tq at 5500 14.5 to 1 693 lift cam same heads and intake set up
Thanks Tom. Those are impressive numbers for sure.