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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-21-237-4
Magnum 280H Hydraulic Flat Tappet Camshaft Lift .480"/.480" Duration 280°/280° RPM Range 2500-5800
$30995
1 left in stock
Ships on Sep 14, 2026
Lowest Price GuaranteeChrysler 383-440ci 1959-1980
- Magnum 280H Hydraulic Flat Tappet Camshaft
Lift .480"/.480"
Duration 280°/280°
RPM Range 2500-5800
Hydraulic-For 9:1 to 10:1 compression. 383 needs 2500 stall. 440 needs 2000 stall. Use 700-800 CFM carburetor headers 3.91+ gear.
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
For 9:1-10:1 compression. 383 needs 2500 stall. 440 needs 2000+ stall. Use 700-800 CFM carburetor, headers, 3.91+ gears.
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 Height2.75
Package Width2.87
Package Length24.5
Weight10.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic flat tappet
Grind NumberCRB 280H-10
Exh. Duration Advertised (Deg)280
Engine Make/SizeMopar 383-440
Intake Valve Lift With Factory Rocker Arm Ratio (I0.48
Int. Duration @ .050 In. (Deg)230
Basic Operating Rpm Range2,500-5,800
Intake Valve Lift0.48 in (12.192 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)280
Lobe Separation (Deg)110
Rpm Range2500-5800
Advertised Duration280 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.48
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.480 int./0.480 exh.
Camshaft Gear Attachment1-bolt
QuantitySold individually
Exhaust Valve Lift0.48 in (12.192 mm)
Advertised Intake Duration280
Intake Duration At 050 Inch Lift231
Exhaust Duration At 050 Inch Lift231
Advertised Exhaust Duration280
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift231 int./231 exh.
Valve Springs RequiredYes
Vendor Part Number21-237-4
Package Qty1
Package TypeEA
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