CALL DART AND ASK THEM TO SPEC A CAM FOR YOUR MOTOR.THATS WHAT I DID WITH AFR AND THEY HAD COMP CAMS TO GRIND A CAM FOR MY MOTOR(4340 CRANK,6 INCH H-BEAM RODS,406 CID).
ITS ABOUT 300 DURATION AND 678 LIFT,WONT KNOW THE RESULTS UNTIL THIS SPRING WHEN THE TRACK OPENS.