excellent all around performance in street carbureted applications. Important Considerations: Works best with COMP Cams roller rockers and matched valve springs. Requires other performance parts (intake manifold, headers, etc.) for best performance. Camshaft Part #12-242-2 Designation: XE268H-10. Duration @ 0.006": 268 / 280deg. Duration @ 0.050": 224 / 230deg. Max Lift w/ 1.5RR: .477" / .480" Lobe Separation: 110deg. Lobe ID#'s: 5443 / 5203. Intake Centerline: 106deg. Engine Type: Chevrolet 350 Small Block Bore: 4.040" Stroke: 3.480" Displacement: 356ci. Compression: 9.25:1 Heads: Dart S/R Intake: Edelbrock Performer. Carburetor: Holley #3310 Vac. Sec. Exhaust: 1 5/8" Headers. Max Torque: 413 ft/lbs @ 3800 RPM. Max Power: 342 HP @ 5000 RPM. Manifold Vacuum:15.5" Hg @ 800 RPM & 17" Hg @ 1000 RPM w/ no load.