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COMP Cams 11-444-8

COMP Cams Comp Cams Xtreme Energy Hydraulic Roller Camshafts

249-11-444-8

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$284.99
COMP Cams Comp Cams Xtreme Energy Hydraulic Roller Camshafts $284.99
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Xtreme Energy Retro-Fit XR300HR Hydraulic Roller Camshaft
Lift: .560"/.580"
Duration: 300/306
Lobe Separation Angle: 110°
RPM Range: 3200-6200

COMP Cams 11-444-8 Details

Chevrolet Big Block 396-454 c.i. 8 CYL. 1965-1996

Hydraulic Roller-Pro Street / Bracket Racing, 10:1 compression, 3500+ stall, good intake, headers.

Specifications:

Engine Make/Size
Chevy Big Block (396-454)
RPM Range
3200-6200
Lifter Type
Hydraulic Roller
Int. Duration Advertised (Deg)
300
Exh. Duration @ .050 in. (Deg)
254
Exh. Duration Advertised (Deg)
306
Exhaust Valve Lift (in.)
0.58
Int. Duration @ .050 in. (Deg)
248
Intake Valve Lift (in.)
0.560
Usage
Street/Performance
Quantity
Sold individually
Lobe Separation (Deg)
110
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.58
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.56
Valve Lift with Factory Rocker Arm Ratio
0.560 int./0.580 exh.
Advertised Duration
300 int./306 exh.
Computer-Controlled Compatible
No
Valve Springs Required
Yes
Cam Style
Hydraulic roller tappet
Exhaust Duration at 050 inch Lift
254
Intake Duration at 050 inch Lift
248
Duration at 050 inch Lift
248 int./254 exh.
Advertised Intake Duration
300
Advertised Exhaust Duration
306
Basic Operating RPM Range
3,200-6,200
Grind Number
CB XR300HR-10
Manufacturer's Part Number:
11-444-8
Shipping Weight:
10.81
Package Height:
24.5
Package Depth:
2.7
Package Width:
2.7

The Leading Edge of Valve Train Technology

Comp Cams Xtreme Energy series can be used in 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 improvements in valve train components and the newest developments in camshaft design. 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 train components 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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