I don`t pay a lot of attention to cranking comp. #`s as a friend of mine runs bottom 8`s and his #`s were around 150 he said and my lowly heap cranks at about 170, runs great on 91 pump swill and lays down decent #`s at the track. Your 505 should be putting out WAY more than that and agree about the intake.........get an M-1 or a victor and I`ll be she comes alive.