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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-550-5
Comp Cams Magnum Mechanical Flat Tappet Camshafts
$32495
Ships on 09/11/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96Marine
- Magnum Marine 270B Mechanical Flat Tappet Camshaft
Lift: .561"/.575"
Duration: 270°/280°
Lobe Separtation Angle: 110°
RPM Range: 2500-6500
Solid-Jet boat or Inboard / Outboard drive. Pleasure usage, skiing, economy.
Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
Jet boat or inboard/outboard drive. Pleasure usage, skiing, economy.
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 Height2.8
Package Width3.0
Package Length24.2
Weight10.25 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)242
Cam StyleMechanical flat tappet
Grind NumberCB 270B-10
Exh. Duration Advertised (Deg)280
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.561
Int. Duration @ .050 In. (Deg)235
Basic Operating Rpm Range2,500-6,500
Intake Valve Lift0.561 in (14.249 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range2500-6500
Advertised Duration270 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.575
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.562 int./0.575 exh.
QuantitySold individually
Exhaust Valve Lift0.575 in (14.605 mm)
Advertised Intake Duration270
Intake Duration At 050 Inch Lift235
Exhaust Duration At 050 Inch Lift242
Advertised Exhaust Duration280
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift235 int./242 exh.
Valve Springs RequiredYes
Vendor Part Number11-550-5
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
