Run a single pattern cam, they always. ALWAYS will make more torque and have a much better curve in relation to horse power.
Try this:
Intake Duration at 050 inch Lift: 254
Exhaust Duration at 050 inch Lift: 254
Duration at 050 inch Lift: 254 int./254 exh.
Advertised Intake Duration: 288
Advertised Exhaust Duration: 288
Advertised Duration: 288 int./288 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.525 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.525 in.
Valve Lift with Factory Rocker Arm Ratio: 0.525 int./0.525 exh.
Lobe Separation (degrees): 108
http://www.summitracing.com/parts/isk-201035/overview/
this was my old 355, it was a really modest build with a 700r4 powering the car, this is the type of curve you should see This is a wheel horsepower dyno, so assume an additional 70 hp to the crank, the cam was 270 duration and .485 lift