Ok just undecided on which cam to use. Both are 108 lobe separation. I will replace the 280/474 cam. I have a recurved FBO distributor going to put 3.91 gears. Already have a 3400-3600 stall 9.5 FTI converter in my Dart Sport 360. One cam is the known 284/484, the is the lesser known oval track cam 288/497 cam. Please give me insight on this combo!