Chevrolet SB
Adv. Duration: 280/280
Duration @ .050": 232/232
Lift: .485/.485

Lobe Separation: 108 LC
Includes Lifters: No
2500-6800. 280-Mega, High performance/bracket, 9.5-10.5:1, lopey idle.

Chevrolet SB
Adv. Duration: 292/292
Duration @ .050": 244/244
Lift: .505/.505

Lobe Separation: 108 LC
Includes Lifters: No
3000-7000. 292-Mega, High performance/bracket, 10-11:1, rough idle.

Chevrolet SB
Adv. Duration: 304/304
Duration @ .050": 256/256
Lift: .525/.525

Lobe Separation: 108 LC
Includes Lifters: No
3200-7500. 304-Mega, , High performance/bracket, 11:1-up, rough idle.