[madd matty]

first run cam brake in second jetting timing third the big pull .once the rings are seated its balls out .once the cam and rings are seated there is no reason not to spin the motor to its limit. 500mile breakin is from the old iron ring days. ps. it will spin at 7200 all day. i have bilt 440 mopar that spin to 7500 all day with twice the piston and rod weght.