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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK33-250-4
Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Small Kit Lift: .584" /.588" Duration: 284°/296° RPM Range: 2300-6500
$44595
Ships on 10/23/2026
Lowest Price GuaranteeFord 352-428 c.i. 8 CYL. 1963-1977
- Xtreme Energy 284H Hydraulic Flat Tappet Camshaft Small Kit
- Hydraulic-Street/Strip 2800+ stall, headers, 9.5:1 compression, lower gears rough idle
Ford, FE, 352, 428, Super Cobra Jet, SCJ, Cobra Jet, Mustang, Mach 1, Shelby, 332, 361, 390, 406, 410, 427, 428, Truck, F100, F150, Ford Truck
Street/strip 2800+ stall, headers, 9.5:1 compression, lower gears, rough idle.
Lift: .584''/.588''
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 Height5.0
Package Width10.25
Package Length25.5
Weight23.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)246
Cam StyleHydraulic flat tappet
Grind NumberXE284H
Exh. Duration Advertised (Deg)296
Locks IncludedNo
Engine Make/SizeFord 352-428
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.584
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 Lift0.584 in (14.834 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 (0.588
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.584 int./0.588 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.588 in (14.935 mm)
Advertised Intake Duration284
Intake Duration At 050 Inch Lift240
Exhaust Duration At 050 Inch Lift246
Timing Chain StyleDouble 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 NumberSK33-250-4
Package Qty1
Package TypeEA
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