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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-20-812-9
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$55895
Ships on 09/08/2026
Lowest Price GuaranteeChrysler 273-360 C.I. 8 CYL. 1964-2003
- Xtreme Energy Retro-Fit XR280HR-10 Hydraulic Roller Camshaft
Lift .541"/.537"
Duration 280/288
Lobe Separation Angle: 110°
RPM Range 200-6000
Hydraulic Roller-3.91+ Gears,9.5:1 compression, 2500+ stall, Aftermarket intake, headers.
273, 360, 318, AMC, Dodge, Mopar, Plymouth, Dart, Road Runner, Charger, Challenger, 383, 400, 440, 426, HEMI, 426 Wedge, 426 HEMI, RB, B, HEMI, 392, Chrysler, LA
3.91+ gears, 9.5:1 compression, 2500+ stall, aftermarket intake, headers.
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft
BrandCOMP CAMS
Package Height2.8
Package Width3.1
Package Length24.3
Weight9.07 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic roller tappet
Grind NumberXR280HR-10
Exh. Duration Advertised (Deg)294
Engine Make/SizeMopar 273-360
Intake Valve Lift With Factory Rocker Arm Ratio (I0.541
Int. Duration @ .050 In. (Deg)230
Basic Operating Rpm Range2,200-6,000
Intake Valve Lift0.541 in (13.741 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)286
Lobe Separation (Deg)110
Rpm Range2200-6000
Advertised Duration280 int./288 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.537
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.541 int./0.537 exh.
QuantitySold individually
Exhaust Valve Lift0.537 in (13.64 mm)
Advertised Intake Duration280
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Advertised Exhaust Duration288
Lifter TypeHydraulic Roller Retrofit
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Vendor Part Number20-812-9
Package Qty1
Package TypeEA
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