Chevrolet Small BlockAdv. Duration: 303/313Duration @ .050": 249/259Lift: .525/.525Lobe Separtaion: 114LCIncluded Lifters: 91111 Hyd. Flat Tappet3000-6800. Blower, Rough idle. Needs Good Heads, 10+ Boost 3200- Conv.
Chevrolet Big BlockAdv. Duration: 279/289Duration @ .050": 225/235Lift: .555/.553Lobe Separation: 114LCIncluded Lifters: 91112 Hyd. Flat Tappet1800-5600. Blower, Fair idle. High Performance Street, stock converter ok, best with 1800+ and gears.
Chevrolet Big BlockAdv. Duration: 289/299Duration @ .050": 235/245Lift: .553/.553Lobe Separation: 114LCIncluded Lifters: 91112 Hyd. Flat Tappet2200-5900. Blower, Lopey idle. Street or Street/Strip. Needs 9.0:1 compression, 2500+ stall.
Chevrolet Big BlockAdv. Duration: 303/313Duration @ .050": 249/259Lift: .595/.595Lobe Separation: 114LCIncluded Lifters: 91112 Hyd. Flat Tappet2500-6400 Blower, Rough idle. Pro Street or Street/Strip. Needs 9.5:1 compression, 2800+