COMP Cams

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

High performance street with 150+ hp nitrous kit or small supercharger, 2400+ stall and lower gears.

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Factory I.D. 3863143 for: 396c.i., 1967-69 Z28, factory 375 HP; 402c.i., 1970, factory 375 HP; 427c.i., 1967-69, factory 425/435 HP; 454c.i., 1970 LS6, factory 450/465 HP; 454c.i., 1971 LS6, factory...

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Great mid-range power, largest cam for stock converter. Good for heavy towing with 4.10 gear.

Chevrolet GEN IV 396-454 Big Block Engines Originally Equipped with Flat Tappet Camshafts

Good top end power, needs good intake, headers and gears. Use with 9.5:1 compression and 2500+ stall.

Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance...

Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance...

Hydraulic - Xtreme Energy: Strong torque. Excellent response, heavy towing in 454 with 4.10 gear.; 262/270 Advertised Duration, 218/224 Duration .050", .504"/.510" Lift, 110 Lobe Separation; Valve...

Hydraulic - Xtreme Energy: Good for street machines, slightly rough idle, stock converter will work but best with 1800+ stall.; 268/280 Advertised Duration, 224/230 Duration .050", .515"/.520" Lift,...

Hydraulic - Xtreme Energy: High performance street, very strong mid-range, with headers and 2000+ stall.; 274/286 Advertised Duration, 230/236 Duration .050", .552"/.555" Lift, 110 Lobe Separation;...

Hydraulic - Xtreme Energy: Street/strip, 2800+ stall, rough idle. 9.5:1+ compression.; 284/296 Advertised Duration, 240/246 Duration .050", .574"/.578" Lift, 110 Lobe Separation; Valve spring...