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COMP Cams 20-811-9

Comp Cams Xtreme Energy Hydraulic Roller Camshafts

COMP Cams 20-811-9

249-20-811-9

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COMP Cams 20-811-9 Comp Cams Xtreme Energy Hydraulic Roller Camshafts $319.99
Xtreme Energy Retro-Fit XR274HR-10 Hydraulic Roller Camshaft Lift .538"/.534"
Duration 274/282
Lobe Separation Angle: 110°
RPM Range 1800-5800

COMP Cams 20-811-9 Details

Chrysler 273-360 C.I. 8 CYL. 1964-2003

Hydraulic Roller-3.55-4.10 Gears, 2200 stall, 9:1 compression, headers, high performance street.

Specifications:

Exhaust Valve Lift (in.)
0.534
Intake Valve Lift (in.)
0.538
RPM Range
1800-5800
Int. Duration @ .050 in. (Deg)
224
Exh. Duration @ .050 in. (Deg)
230
Int. Duration Advertised (Deg)
274
Exh. Duration Advertised (Deg)
282
Lifter Type
Hydraulic Roller Retrofit
Usage
Street/Performance
Engine Make/Size
Mopar 273-360
Advertised Duration
274 int./282 exh.
Advertised Exhaust Duration
282
Advertised Intake Duration
274
Basic Operating RPM Range
1,800-5,800
Cam Style
Hydraulic roller tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
224 int./230 exh.
Exhaust Duration at 050 inch Lift
230
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.534
Grind Number
XR274HR-10
Intake Duration at 050 inch Lift
224
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.538
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.538 int./0.534 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
110
Manufacturer's Part Number:
20-811-9

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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