[bill37341]

A few years ago Hot Rod ran an article about changing the firing order of a chevrolet to that of the 351 Ford . They also ran dyno tests on it. If memory serves me correctly, the motor made measurably more power. I'm not sure why your builder chose the 302 cam, but it really only matters what is on the cam card. Could be the best cam for your weight, driving habits etc. (Could be that is what he had on the shelf.) Since the 351 was developed 7 years after the 221 small block, it could be that Ford made the change to give a little more power. A running change to the 302 would have been confusing to some, so they left it the same as before. Regardless, you are fine with the cam. Bill.