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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK11-250-3
Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Small Kit Lift: .574"/.578" Duration: 284°/296° RPM Range: 2300-6500
$44895
Ships on 10/23/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Small Kit
- Street / Strip, 2800+ stall, rough idle
- 9.5 compression
Installation note: Stock springs cannot be used
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Street/strip, 2800+ stall, rough idle, 9.5:1+ compression.
Lift: .574"/.578''
Duration: 284°/296°
RPM Range: 2300-6500
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.
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Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.1
Package Width10.5
Package Length25.3
Weight19.6 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)246
Cam StyleHydraulic flat tappet
Grind NumberCB XE284H-10
Exh. Duration Advertised (Deg)296
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.574
Int. Duration @ .050 In. (Deg)240
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,300-6,500
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.574 in (14.58 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)284
Lobe Separation (Deg)110
Rpm Range2300-6500
Lifter StyleHydraulic flat tappet
Advertised Duration284 int./296 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.578
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.574 int./0.578 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.578 in (14.681 mm)
Advertised Intake Duration284
Intake Duration At 050 Inch Lift240
Exhaust Duration At 050 Inch Lift246
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration296
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift240 int./246 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK11-250-3
Package Qty1
Package TypeEA
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