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COMP Cams 20-812-9

Comp Cams Xtreme Energy Hydraulic Roller Camshafts

COMP Cams 20-812-9

249-20-812-9

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COMP Cams 20-812-9 Comp Cams Xtreme Energy Hydraulic Roller Camshafts $333.99
Xtreme Energy Retro-Fit XR280HR-10 Hydraulic Roller Camshaft
Lift .541"/.537"
Duration 280/288
Lobe Separation Angle: 110°
RPM Range 200-6000

COMP Cams 20-812-9 Details

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

Hydraulic Roller-3.91+ Gears,9.5:1 compression, 2500+ stall, Aftermarket intake, headers.

Specifications:

Exhaust Valve Lift (in.)
0.537
Intake Valve Lift (in.)
0.541
RPM Range
2200-6000
Int. Duration @ .050 in. (Deg)
230
Exh. Duration @ .050 in. (Deg)
236
Int. Duration Advertised (Deg)
286
Exh. Duration Advertised (Deg)
294
Lifter Type
Hydraulic Roller Retrofit
Usage
Street/Performance
Engine Make/Size
Mopar 273-360
Advertised Duration
280 int./288 exh.
Advertised Exhaust Duration
288
Advertised Intake Duration
280
Basic Operating RPM Range
2,200-6,000
Cam Style
Hydraulic roller tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
230 int./236 exh.
Exhaust Duration at 050 inch Lift
236
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.537
Grind Number
XR280HR-10
Intake Duration at 050 inch Lift
230
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.541
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.541 int./0.537 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
110
Manufacturer's Part Number:
20-812-9

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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