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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-01-427-8
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. 1996-1999
- Xtreme Energy XR294HR Hydraulic Roller Camshaft
- 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
Works well with large c.i. engines. Great for bracket racing, with all upgraded parts, needs 3500+ stall.
Lift: .560"/.580"
Duration: 300/306
Lobe Separation Angle: 114°
RPM Range: 3000-6600
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 Height2.75
Package Width3.0
Package Length24.5
Weight10.45 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)254
Cam StyleHydraulic roller tappet
Grind NumberCBVI XR300HR-14
Exh. Duration Advertised (Deg)306
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.56
Int. Duration @ .050 In. (Deg)248
Basic Operating Rpm Range3,000-6,600
Intake Valve Lift0.56 in (14.224 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)300
Lobe Separation (Deg)114
Rpm Range3000-6600
Advertised Duration300 int./306 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.58
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.560 int./0.580 exh.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lift0.58 in (14.732 mm)
Advertised Intake Duration300
Intake Duration At 050 Inch Lift248
Exhaust Duration At 050 Inch Lift254
Advertised Exhaust Duration306
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift248 int./254 exh.
Valve Springs RequiredYes
Vendor Part Number01-427-8
Package Qty1
Package TypeEA
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