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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-21-223-4
Xtreme Energy 268H Hydraulic Flat Tappet Camshaft Only Lift: .477" /.480" Duration: 268°/280° RPM Range: 1600-5800
$30995
Ships on Sep 15, 2026
Lowest Price GuaranteeChrysler 383-440ci Big Block 1959-80
Single Bolt Gear
Single Bolt Gear
- Xtreme Energy 268H Hydraulic Flat Tappet Camshaft Only
Lift: .477''/.480''
Duration: 268°/280°
RPM Range: 1600-5800
Great for street Machines, slightly rough idle, works with stock converter.
| Operating Range: | 1600-5800 RPM |
| Duration Advertised: | 268° Intake / 280° Exhaust |
| Duration @ .050' Lift: | 224° Intake / 230° Exhaust |
| Valve Lift: | .477' Intake / .480' Exhaust |
| Lobe Separation Angle: | 110° |
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
Great for street machines, slightly rough idle works with stock converter but best with 1800+ 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.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.8
Package Width3.0
Package Length24.1
Weight9.85 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic flat tappet
Grind NumberCRB XE268H-10
Exh. Duration Advertised (Deg)280
Engine Make/SizeMopar 383-440
Intake Valve Lift With Factory Rocker Arm Ratio (I0.477
Int. Duration @ .050 In. (Deg)224
Basic Operating Rpm Range1,600-5,800
Intake Valve Lift0.477 in (12.116 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)268
Lobe Separation (Deg)110
Rpm Range1600-5800
Advertised Duration268 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.48
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.477 int./0.480 exh.
Camshaft Gear Attachment1-bolt
QuantitySold individually
Exhaust Valve Lift0.48 in (12.192 mm)
Advertised Intake Duration268
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift230
Advertised Exhaust Duration280
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift224 int./230 exh.
Valve Springs RequiredYes
Vendor Part Number21-223-4
Package Qty1
Package TypeEA
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