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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-21-243-4
Magnum 305H Hydraulic Flat Tappet Camshaft Lift .525"/.525" Duration 305°/305° RPM Range 3500-6500
$30995
Ships on Sep 15, 2026
Lowest Price GuaranteeChrysler 383-440ci 1959-1980
- Magnum 305H Hydraulic Flat Tappet Camshaft
Lift .525"/.525"
Duration 305°/305°
RPM Range 3500-6500
Hydraulic-Pro Street. 383 needs 3500-3700 stall. 440 needs 3000-3300 stall. 850 CFM carb 10:1 up. Headers & good int. 3.90-4.30 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
Pro Street. 383 needs 3500-3700+ stall. 440 needs 3000-3300+ stall. 850 CFM carb, 10:1+ compression. Headers and good int, 3.90-4.30 gear.
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 Height2.9
Package Width3.0
Package Length24.2
Weight9.7 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)253
Cam StyleHydraulic flat tappet
Grind NumberCRB 305H-10
Exh. Duration Advertised (Deg)305
Engine Make/SizeMopar 383-440
Intake Valve Lift With Factory Rocker Arm Ratio (I0.525
Int. Duration @ .050 In. (Deg)253
Basic Operating Rpm Range3,500-6,500
Intake Valve Lift0.525 in (13.335 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)305
Lobe Separation (Deg)110
Rpm Range3500-6500
Advertised Duration305 int./305 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.525
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.525 int./0.525 exh.
Camshaft Gear Attachment1-bolt
QuantitySold individually
Exhaust Valve Lift0.525 in (13.335 mm)
Advertised Intake Duration305
Intake Duration At 050 Inch Lift253
Exhaust Duration At 050 Inch Lift253
Advertised Exhaust Duration305
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift253 int./253 exh.
Valve Springs RequiredYes
Vendor Part Number21-243-4
Package Qty1
Package TypeEA
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