Holden V8 252-308 [1970-1988]
Adv Duration: 281/289
Duration @ .050": 227/235
Lift: .501/.501
Lifters Included
2000-5700, Rattler™, choppy idle, high performance street, stock converter ok, best with 1800+ and gears

Ford Big Block 429-460 [1968-1995]
Adv Duration: 280/288
Duration @ .050": 227/235
Lift: .565/.565
Lifters Included
2200-5900, Rattler™, choppy idle, high performance street, stock converter ok, best with 1800+ and gears

Holden V8 252-308 [1970-1988]
Adv Duration: 297/305
Duration @ .050": 243/251
Lift: .512/.528
Lifters Included
2600-6200, Big Daddy Rattler™, rough idle, pro street or street/strip, needs 9.5:1 compression, 2800+