COMP Cams Xtreme Energy 274H Hydraulic Flat Tappet Camshaft & Lifter Kit Lift: .488" /.491" Duration: 274°/286° RPM Range: 1800-6000
249-CL51-224-4
Items You Need
Pontiac 265-455ci V-8 1955-81
| Operating Range: | 1800-6000 RPM |
| Duration Advertised: | 274° Intake / 286° Exhaust |
| Duration @ .050'' Lift: | 230° Intake / 236° Exhaust |
| Valve Lift w/1.5 Rockers: | .488'' Intake / .491'' Exhaust |
| Lobe Separation Angle: | 110° |
Pontiac; Super Duty; SD; SD455; HO; 455 HO; Trans-Am; Catalina; Firebird; Formula; 421; 455; 400; 428; 350; 265; 301; 370; 389; 301; 287; 317; 347; Ram Air; Ram Air IV; Ram Air III; Bonneville; Grand Prix; LeMans; Parisienne; Grand Am; Century; Regal;
High performance street, very strong mid-range, headers and 2200+ stall.
Specifications:
The Leading Edge of Valve Train Technology
Comp Cams Xtreme Energy series are perfect for any street or street/strip application where both throttle response and top-end horsepower is desired. These camshafts are designed to take advantage of the latest and greatest in valvetrain technology . Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum. We do not recommend the use of stock valve springs with these camshafts due to the aggressive lobe designs.
Features:Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.
Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.
Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.
Motor Vehicles
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Electrical Cords
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