383 cam selection

Hughes 4650bs solid is what I run in my 383.
duration @ 050 246 in 250 ex lift 576 in 588 ex.
works well with my ported hp 915s. 2.14 in and 1.74 ex. why did I keep 1.74 ex. ask herb.
3800 stall and 4.56 do the job well.