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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-01-410-8
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$57795
Ships on 09/09/2026
Lowest Price GuaranteeChevrolet Gen VI Big Block 454ci & 502 c.i. 8 CYL. 1996-1999For computer controlled engines
- Xtreme Energy XR258HR Hydraulic Roller Camshaft
- For computer controlled engines
Lift: .510"/.510"
Duration: 258/267
Lobe Separation Angle: 113°
RPM Range: 800-4800 - 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
Good replacement cam for minimally modified fuel injection engines.
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 Height2.9
Package Width2.9
Package Length24.4
Weight11.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)212
Cam StyleHydraulic roller tappet
Grind NumberCBVI XR258HR-13
Exh. Duration Advertised (Deg)208
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.51
Int. Duration @ .050 In. (Deg)206
Basic Operating Rpm Range800-4,800
Intake Valve Lift0.51 in (12.954 mm)
Computer-Controlled CompatibleYes
Int. Duration Advertised (Deg)258
Lobe Separation (Deg)113
Rpm Range800-4800
Advertised Duration258 int./267 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.
Camshaft Gear Attachment3-bolt
QuantitySold individually
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration258
Intake Duration At 050 Inch Lift206
Exhaust Duration At 050 Inch Lift212
Advertised Exhaust Duration267
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift206 int./212 exh.
Valve Springs RequiredYes
Vendor Part Number01-410-8
Package Qty1
Package TypeEA
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