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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-21-224-4
Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Only Lift .488"/.491" Duration 274°/286° RPM Range 1800-6000
$30995
Ships on 09/15/2026
Lowest Price GuaranteeChrysler 383-440ci Big Block 1959-80
Single Bolt Gear
Single Bolt Gear
- Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Only
Lift .488"/.491"
Duration 274°/286°
RPM Range 1800-6000
Hydraulic-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.
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 Height2.6
Package Width3.1
Package Length24.5
Weight9.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberCRB XE274H-10
Exh. Duration Advertised (Deg)286
Engine Make/SizeMopar 383-440
Intake Valve Lift With Factory Rocker Arm Ratio (I0.488
Int. Duration @ .050 In. (Deg)230
Basic Operating Rpm Range1,800-6,000
Intake Valve Lift0.488 in (12.395 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)110
Rpm Range1800-6000
Advertised Duration274 int./286 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.491
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.488 int./0.491 exh.
Camshaft Gear Attachment1-bolt
QuantitySold individually
Exhaust Valve Lift0.491 in (12.471 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Vendor Part Number21-224-4
Package Qty1
Package TypeEA
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