Really think it is a lot of cam? Comparing it v/s stock magnum cam used in 383 and 440 it is barely bigger @.050

383/440 Magnum Stock Cam:
Intake Duration @ .050� = 208�
Exhaust Duration @ .050� = 221�

Hughes cam HEH 1928bl
Intake Duration at .050" 219°
Exhaust Duration at .050" 228°

This is my first big block build, and I want to get it right the first time. Swapping cams used to be fun, but I am old now and my back is even older!