Mopar 557 cam

Anyone have experience with this cam in a 340. Engine is 9.85 to1 comp. ported j heads 2.02 intake valves. eddy street tunnel ram to small avs carbs. Car is 68 dart about 3300 lbs. 3.91 gears and 26 in. tall drag radials. I will order a custom converter once I decide on the cam. Probably ptc. The other cam I was considering is a howards 254 at .050 int. 260 ex. .550 in. .555 ex. on a 108. Howards calls for street strip. 10 to 1 comp and 3500 converter and gears. Is this to much cam. Want a healthy sound but not at the cost of power. Not that concerned about streetability not a lot of freeway driving.