heres the one i used in my truck. yes you will need a computer controled one.
I used the XFI Extreme FUel injection cam from comp cams, and it gave me great low end torque. and good midrange.

www.jegs.com
heres the description below

"XFI" 252 Hydraulic Flat Tappet Camshaft
Chevy 262-400ci 1955-98
Lift: .477"/.472" w/1.6 Rockers
Duration: 252°/266°
RPM Range: 1300-5300
249-12-364-4

Excellent throttle body cam. Lots of torque.
Operating Range: 1300-5300 RPM
Duration Advertised: 252° Intake / 266° Exhaust
Duration @ .050'' Lift: 208° Intake / 217° Exhaust
Valve Lift w/1.6 Rockers: .477'' Intake / .472'' Exhaust
Lobe Separation Angle: 113°

hope this helps