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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK21-224-4
Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Small Kit Lift: .488"/.491" Duration: 274°/286° RPM Range: 1800-6000
$45695
Ships on 10/23/2026
Lowest Price GuaranteeChrysler 383-440ci Big Block 1959-80
Single Bolt Gear
Single Bolt Gear
- Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Small Kit
- High performance Street
- Very strong mid-range
- With headers 2200+ stall.
273, 360, 318, AMC, Dodge, Mopar, Plymouth, Dart, Road Runner, Charger, Challenger, 383, 400, 440, 426, HEMI, 426 Wedge, 426 HEMI, RB, B, HEMI, 392, Chrysler, LA
High performance street. Very strong mid-range with headers, 2200+ stall.
Lift: .488"/.491"
Duration: 274°/286°
RPM Range: 1800-6000
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 Width10.5
Package Length26.0
Weight21.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberCRB XE274H-10
Exh. Duration Advertised (Deg)286
Locks IncludedNo
Engine Make/SizeMopar 383-440
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.488
Int. Duration @ .050 In. (Deg)230
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,800-6,000
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.488 in (12.395 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)110
Rpm Range1800-6000
Lifter StyleHydraulic flat tappet
Advertised Duration274 int./286 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.491
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.488 int./0.491 exh.
Camshaft Gear Attachment1-bolt
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.491 in (12.471 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK21-224-4
Package Qty1
Package TypeEA
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