Chevrolet Small Block
Adv. Duration: 313/321
Duration @ .050": 278/286
Lift: .550/.570
Lobe Separation: 106 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
4200-7800.  Rough idle, large 400+ Bracket/Class cam. Needs good heads & intake.

Chevrolet Small Block
Adv. Duration: 322/322
Duration @ .050": 276/276
Lift: .591/.591
Lobe Separation: 110 LC
Included Lifters: 91115 Mechanical Flat Tappet
3500-7500.  Serious competition 383-406. Requires 12.0:1+ CR, good single plane intake.

Chevrolet Small Block
Adv. Duration: 322/322
Duration @ .050": 276/276
Lift: .591/.591
Lobe Separation: 110 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
3500-7500.  Serious competition 383-406. Requires 12.0:1+ CR, good single plane intake.

Chevrolet Small Block
Adv. Duration: 281/287
Duration @ .050": 246/252
Lift: .520/.530
Lobe Separation: 106 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
2600-6500. Short Track profile, best on 1/4 to 3/8 mile tracks. 2 barrel OK.

Chevrolet Small Block
Adv. Duration: 287/299
Duration @ .050": 252/264
Lift: .545/.555
Lobe Separation: 106 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
3000-7000. Best on fast 1/4 to 3/8 mile. Larger cubic inch 383+ recommended. 11.0:1+.

Chevrolet Small Block
Adv. Duration: 285/285
Duration @ .050": 250/250
Lift: .525/.525
Lobe Separation: 106 LC
Included Lifters: 91115 Mechanical Flat Tappet
2800-6500. Best on 1/4 to 3/8 mile tight tracks. Big torque out of the corners. Needs headers.

Chevrolet Small Block
Adv. Duration: 291/301
Duration @ .050: 256/266
Lift: .535/.555
Lobe Separation: 106 LC
Included Lifters: 91115 Mech. Flat Tappet
3800-7200.  Drag race with 4000+ stall, 11.0:1+ CR. Best with 1.6 intake rockers.

Chevrolet Small Block
Adv. Duration: 291/301
Duration @ .050: 256/266
Lift: .535/.555
Lobe Separation: 106 LC
Included Lifters: 91115 Mech. Flat Tappet
3800-7200.  Small Base Circle, Drag race with 4000+ stall, 11.0:1+ CR. Best with 1.6 intake rockers.

Chevrolet Small Block
Adv. Duration: 291/301
Duration @ .050: 256/266
Lift: .535/.555
Lobe Separation: 106 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
3800-7200.  Small Base Circle, Drag race with 4000+ stall, 11.0:1+ CR. Best with 1.6 intake rockers.

Chevrolet Small Block
Adv. Duration: 301/309
Duration @ .050: 266/274
Lift: .555/.555
Lobe Separation: 106 LC
Included Lifters: 91115 Mech. Flat Tappet
4200-7400.  Drag race with 12.0:1+ CR, 4800+ stall. Needs good heads & intake.

Chevrolet Small Block
Adv. Duration: 301/309
Duration @ .050: 266/274
Lift: .555/.555
Lobe Separation: 106 LC
Included Lifters: 91115 Mech. Flat Tappet
4200-7400.  Small Base Circle, Drag race with 12.0:1+ CR, 4800+ stall. Needs good heads & intake.

Chevrolet Small Block
Adv. Duration: 301/309
Duration @ .050: 266/274
Lift: .555/.555
Lobe Separation: 106 LC
Included Lifters: 91118 Direct Lube Mech. Flat Tappet
4200-7400.  Small Base Circle, Drag race with 12.0:1+ CR, 4800+ stall. Needs good heads & intake.