340 Performance Question

OP cam? If so pretty good amount of duration at .050, and a 110 lsa, should have a lumpy idle in in his 346ci SB!!
Summit Racing Part Number:DCC-4452761
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,500-5,800
Intake Duration at 050 inch Lift: 228
Exhaust Duration at 050 inch Lift: 231
Duration at 050 inch Lift: 228 int./231 exh.
Advertised Intake Duration: 268
Advertised Exhaust Duration: 272
Advertised Duration: 268 int./272 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.450 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.455 in.
Valve Lift with Factory Rocker Arm Ratio: 0.450 int./0.455 exh.
Lobe Separation (degrees): 110

Much hotter than the comp 268 and others that have about 218 @.050