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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K11-550-5
Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts
$72395
Ships on 09/11/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96Marine
- Magnum Marine 270B Mechanical Flat Tappet Camshaft Complete Kit
- Cams Are Very Aggressive
- Designed For Performance Oriented Vehicles
- Deliver More Power Than Standard Camshafts
- 1 Year Limited Warranty
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.
Lift: .561"/.575"
Duration: 270°/280°
Lobe Separtation Angle: 110°
RPM Range: 2500-6500
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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.25
Package Length25.5
Weight29.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)242
Cam StyleMechanical flat tappet
Grind Number270B
Exh. Duration Advertised (Deg)280
Locks IncludedYes
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.561
Int. Duration @ .050 In. (Deg)235
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,500-6,500
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.028 in (0.711 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.561 in (14.249 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)270
Lobe Separation (Deg)110
Rpm Range2500-6500
Lifter StyleMechanical flat tappet
Advertised Duration270 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.575
Valve Springs IncludedYes
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.561 int./0.575 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lash0.03 in (0.762 mm)
Exhaust Valve Lift0.575 in (14.605 mm)
Advertised Intake Duration270
Outside Diameter Of Outer Spring1.509 in (38.3 mm)
Intake Duration At 050 Inch Lift235
Exhaust Duration At 050 Inch Lift242
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration280
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift235 int./242 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK11-550-5
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
