Lift: .663 / .680, Duration @ .050: 249 / 255, Centerline: 106, Good mid-range horsepower, Rough idle, Needs 11.0:1+ compression.

Year: 1965 - 1996
Make: Chevy
Engine: 396-502 (Mark IV)
Camshaft Type: Mechanical Roller
Basic RPM Range: 3000 to 7000
Valve Lift Intake: .663
Valve Lift Exhaust: .680
Duration Intake: 281
Duration Exhaust: 287
Duration at 050 Intake: 249
Duration at 050 Exhaust: 255
Lobe Separation: 110
Intake Centerline: 106
Firing Order: 1-8-4-3-6-5-7-2