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COMP Cams Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Only Lift: .507" /.510" Duration: 284°/296° RPM Range: 2300-6500

COMP Cams 51-225-4

249-51-225-4

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COMP Cams Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Only Lift: .507" /.510" Duration: 284°/296° RPM Range: 2300-6500 $144.99
Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Only
Lift: .507''/.510''
Duration: 284°/296°
RPM Range: 2300-6500

COMP Cams 51-225-4 Details

Pontiac 265-455ci V-8 1955-81

Hydraulic-Street / Strip, needs 9:1 comp. 2800+ stall, headers, gears, rough idle.

Operating Range:2300-6500 RPM
Duration Advertised:284° Intake / 296° Exhaust
Duration @ .050'' Lift:240° Intake / 246° Exhaust
Valve Lift w/1.5 Rockers:.507'' Intake / .510'' Exhaust
Lobe Separation Angle:110°

Specifications:

Intake Valve Lift (in.)
0.507
Exhaust Valve Lift (in.)
0.51
RPM Range
2300-6500
Int. Duration @ .050 in. (Deg)
240
Exh. Duration @ .050 in. (Deg)
246
Int. Duration Advertised (Deg)
284
Exh. Duration Advertised (Deg)
296
Lifter Type
Hydraulic Flat Tappet
Engine Make/Size
Pontiac 265-455
Usage
Street/Performance
Advertised Duration
284 int./296 exh.
Advertised Exhaust Duration
296
Advertised Intake Duration
284
Basic Operating RPM Range
2,300-6,500
Cam Style
Hydraulic flat tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
240 int./246 exh.
Exhaust Duration at 050 inch Lift
246
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.51
Grind Number
P XE284H-10
Intake Duration at 050 inch Lift
240
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.507
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.507 int./0.510 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
110
Manufacturer's Part Number:
51-225-4

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:
  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows an increase in duration for improved performance and assists power brakes
  • Excellent performance in street carbureted applications
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios

    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.

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