Chevrolet Big Block Adv. Duration: 283/289 Duration @ .050": 248/254 Lift: .578/.623 Lobe Separation: 108 LC Included Lifters: 91118 Direct Lube Mech. Flat Tappet 2600-6500. Lopey idle, Street High Performance/Strip. Best with 3200 stall, 10.5:1 CR & 800+ cfm.
Chevrolet Big Block Adv. Duration: 285/291 Duration @ .050": 250/256 Lift: .595/.606 Lobe Separation: 110 LC Included Lifters: 91115 Mechanical Flat Tappet 2800-6600. Increased mid-range torque & horsepower. Can be used with NOS.
Chevrolet Big Block Adv. Duration: 285/291 Duration @ .050": 250/256 Lift: .595/.606 Lobe Separation: 110 LC Included Lifters: 91118 Direct Lube Mech. Flat Tappet 2800-6600. Increased mid-range torque & horsepower. Can be used with NOS.