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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-20-249-4
Comp Cams Magnum Mechanical Flat Tappet Camshafts
$30995
Ships on Sep 04, 2026
Lowest Price GuaranteeChrysler 273-360ci Small Block 1964-2000
- Magnum 306S Mechanical Flat Tappet Camshaft
Lift: .555"/.555"
Duration: 306°/306°
Lobe Seperation Angle: 110°
RPM Range: 4000-7000
Max effort Bracket Racing or Pro Street. 10:1 to 11:1 compression with 4000 to 4500 stall and 4.30 to 4.88 gear.
| Operating Range: | 4000-7000 RPM |
| Duration Advertised: | 306° Intake / 306° Exhaust |
| Duration @ .050' Lift: | 260° Intake / 260° Exhaust |
| Valve Lift: | .555' Intake / .555' 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
Max effort bracket racing or Pro Street. 10:1-11:1 compression with 4000 to 4500 stall and 4.30-4.88 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.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width2.87
Package Length24.5
Weight11.2 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)260
Cam StyleMechanical flat tappet
Grind NumberCRS 306S-10
Exh. Duration Advertised (Deg)306
Engine Make/SizeMopar 273-360
Intake Valve Lift With Factory Rocker Arm Ratio (I0.555
Int. Duration @ .050 In. (Deg)260
Basic Operating Rpm Range4,000-7,000
Intake Valve Lash0.022 in (0.559 mm)
Intake Valve Lift0.555 in (14.097 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)306
Lobe Separation (Deg)110
Rpm Range4000-7000
Advertised Duration306 int./306 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.555
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.555 int./0.555 exh.
QuantitySold individually
Exhaust Valve Lash0.022 in (0.559 mm)
Exhaust Valve Lift0.555 in (14.097 mm)
Advertised Intake Duration306
Intake Duration At 050 Inch Lift260
Exhaust Duration At 050 Inch Lift260
Advertised Exhaust Duration306
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift260 int./260 exh.
Valve Springs RequiredYes
Vendor Part Number20-249-4
Package Qty1
Package TypeEA
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