Chevrolet SB Adv. Duration: 280/288 Duration @ .050": 227/235 Lift: .525/.530 Lobe Separation: 109 Included Lifters: No 1800-5600. Rattler, Choppy idle, high performance street, stock converter ok, best with 1800+ and gears.
Chevrolet SB Adv. Duration: 288/296 Duration @ .050": 235/243 Lift: .530/.530 Lobe Separation: 109 LC Included Lifters: No 2000-5900. Big Mama Rattler, Lopey idle, street or street/strip. Needs 9.0:1 compression, 2500+ stall.
Chevrolet SB Adv. Duration: 296/304 Duration @ .050": 243/251 Lift: .530/.515 Lobe Separation: 109 Included Lifters: No 2400-6200. Big Daddy Rattler, Rough idle, pro street or street/strip. Needs 9.5:1 compression, 2800+ stall.