Pontiac V8 265-455 1955-1981
Adv. Duration: 266/274
Duration @ .050": 213/221
Lift: .485/.475

Lobe Separation: 110 LC
Included Lifters: 91466 Hyd. Roller
1400-5600. Noticeable idle, broad low to mid-range power band. Needs 2000+ stall.

Pontiac V8 265-455 1955-1981
Adv. Duration: 272/282
Duration @ .050": 219/229
Lift: .525/.520

Lobe Separation: 110 LC
Included Lifters: 91466 Hyd. Roller
1800-6000. Mile idle, Street Performance, good low to mid-range torque & power.

Pontiac V8 265-455 1955-1981
Adv. Duration: 280/290
Duration @ .050": 227/237
Lift: .560/.560

Lobe Separation: 110 LC
Included Lifters: 91466 Hyd. Roller
2000-6200. Choppy idle, Saturday night special, Street/Strip. Needs good intake, headers & 2500+.

Pontiac V8 265-455 1955-1981
Adv. Duration: 290/296
Duration @ .050": 237/243
Lift: .560/.565

Lobe Separation: 108 LC
Included Lifters: 91466 Hyd. Roller
2500-6500. Good idle, great mid-range performance. 10.0:1+ CR, 2600+ stall & 3.73 or lower gears.

Pontiac V8 265-455 1955-1981
Adv. Duration: 296/302
Duration @ .050": 243/249
Lift: .600/.600

Lobe Separation: 108 LC
Included Lifters: 91466 Hyd. Roller
3000-6800. 4/7 Swap, Rough idle, Hot Street/Strip, good mid-range torque & power.

Pontiac V8 265-455 1955-1981
Adv. Duration: 306/312
Duration @ .050": 253/259
Lift: .600/.600

Lobe Separation: 108 LC
Included Lifters: 91466 Hyd. Roller
3200-7000. 4/7 Swap, Hot Street/Bracket, major mid-range & top end performance. 11.0:1+ CR, 3500+ stall.