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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-01-417-8
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$57795
Ships on 10/19/2026
Lowest Price GuaranteeChevrolet Gen VI Big Block 454ci & 502 c.i. 8 CYL. 1996-1999For computer controlled engines
- Xtreme Energy XR276HR Hydraulic Roller Camshaft
- For computer controlled engines
Lift: .510"/.510"
Duration: 276/282
Lobe Separation Angle: 113°
RPM Range: 1800-5800 - Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Great in performance applications with custom tuning and 2200+ stall converter.
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 Height2.7
Package Width2.9
Package Length24.3
Weight11.15 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic roller tappet
Grind NumberXR276HR-13
Exh. Duration Advertised (Deg)282
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.51
Int. Duration @ .050 In. (Deg)224
Basic Operating Rpm Range1,800-5,800
Intake Valve Lift0.51 in (12.954 mm)
Computer-Controlled CompatibleYes
Int. Duration Advertised (Deg)276
Lobe Separation (Deg)113
Rpm Range1800-5800
Advertised Duration276 int./282 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.510 int./0.510 exh.
QuantitySold individually
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration276
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift230
Advertised Exhaust Duration282
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift224 int./230 exh.
Valve Springs RequiredYes
Vendor Part Number01-417-8
Package Qty1
Package TypeEA
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