building up engine need some cam sugestions

[1972C10]

249-CL12-212-2
Magnum 280H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .480''
Duration: 280°
RPM Range: 2000-6000

*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.
Great for street machines. Needs stall, headers & gears. Rough idle.

Operating Range: 2000-6000 RPM
Duration Advertised: 280° Intake / 280° Exhaust
Duration @ .050'' Lift: 230° Intake / 230° Exhaust
Valve Lift w/1.5 Rockers: .480'' Intake / .480'' Exhaust
Lobe Separation Angle: 110°

Thats the specs on the comp Here are the specs on the crane I just think the crane performs a little better there are a few differences in specs but the rpm range is what it thoguht was odd i was under the impression the comp 480 was a 3000-6000 as well.

270-100072 Advertised Duration: 284º
Duration @ .050: 228°
Lobe Separation: 112°
Gross Lift: .480''
RPM Range: 3000-6000

[MylilBowTie]

Its been said before that Comp (same cam specs) has more power and Crane (same cam specs) has better sound with little less power. For me it seems to be true, with what I have seen.