I have used all the mopar performance style cams 284-484 is the best one of the old style for street /strip and 10.5 comp
292 509 on 104 center by far most radical of hyd cams lousy low end without at least 4.10s and stick goes like a bat 3500 to 7200.way higher then a 340 should go stock at least 11.0 comp advance 4 degree's
284-474 not enough power overall at least 9.5 comp
Comp 268 single pattern runs great all around and good for low comp down to 7.5 comp
Winner for me Custom ground racer brown great low end and don't quit until 6500 Based on a 68 340 stick cam with more lift and different center line