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COMP Cams K11-550-5

Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts

COMP Cams K11-550-5

249-K11-550-5

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Ships 12/12/16 if Ordered Today
COMP Cams K11-550-5 Comp Cams 'Magnum' Mechanical Flat Tappet Camshafts $553.99
Magnum Marine 270B Mechanical Flat Tappet Camshaft Complete Kit
Lift: .561"/.575"
Duration: 270°/280°
Lobe Separtation Angle: 110°
RPM Range: 2500-6500

COMP Cams K11-550-5 Details

Chevy 396-454ci Big Block 1965-96

  • Marine

  • Cams Are Very Aggressive
  • Designed For Performance Oriented Vehicles
  • Deliver More Power Than Standard Camshafts
  • 1 Year Limited Warranty

  • Specifications:

    Intake Valve Lift (in.)
    0.561
    Exhaust Valve Lift (in.)
    0.575
    Int. Duration @ .050 in. (Deg)
    235
    Exh. Duration @ .050 in. (Deg)
    242
    RPM Range
    2500-6500
    Int. Duration Advertised (Deg)
    270
    Exh. Duration Advertised (Deg)
    280
    Engine Make/Size
    Chevy Big Block (396-454)
    Lifter Type
    Mechanical Flat Tappet
    Usage
    Marine
    Gaskets Included
    No
    Advertised Duration
    270 int./280 exh.
    Advertised Exhaust Duration
    280
    Advertised Intake Duration
    270
    Assembly Lubricant Included
    Yes
    Basic Operating RPM Range
    2,500-6,500
    Cam Style
    Mechanical flat tappet
    Computer-Controlled Compatible
    No
    Duration at 050 inch Lift
    235 int./242 exh.
    Exhaust Duration at 050 inch Lift
    242
    Exhaust Valve Lash (in.)
    0.03
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.575
    Grind Number
    270B
    Intake Duration at 050 inch Lift
    235
    Intake Valve Lash (in.)
    0.028
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.561
    Lifter Style
    Mechanical flat tappet
    Lifters Included
    Yes
    Locks Included
    Yes
    Outside Diameter of Outer Spring (in.)
    1.509
    Pushrods Included
    No
    Quantity
    Sold as a kit
    Retainers Included
    Yes
    Rocker Arms Included
    No
    Timing Chain and Gears Included
    Yes
    Timing Chain Style
    Double roller
    Valve Lift with Factory Rocker Arm Ratio
    0.561 int./0.575 exh.
    Valve Springs Included
    Yes
    Valve Springs Required
    No
    Valve Stem Seals Included
    Yes
    Lobe Separation (Deg)
    110
    Manufacturer's Part Number:
    K11-550-5

    Magnum camshafts are very aggressive and specifically designed for the street enthusiast looking for more power with that Pro Street sound. Intended for performance oriented vehicles that will see little street use. The idle characteristics of your engine will change due to the increased duration and overlap of the Magnum Cam Series. You will notice a racey idle with the 282-grind while the 294 and 306-grinds will produce a rough or ''rumbly'' idle. Stock components are generally incompatible. Changes are needed in rear end gear ratios, headers and the torque converter. Comp Cams Magnum Cams will affect your power accessories to a certain extent. The 280 and 292-grinds are the biggest cams that should be used with power assisted brakes, air conditioning, etc. You should remember that the bigger the engine is, the less the cam will affect the vacuum which affects your power accessories. The smaller your engine is, the more the Magnum Camshaft will affect your power accessories. Most late model vehicles have a vacuum canister. If your vehicle does not have a vacuum canister, it may be necessary to add one.

    Features:
  • Great high RPM power
  • Easy on valve train parts
  • Can be used with mild ratio rocker arms and traditional performance valve springs
  • Best with aftermarket converter and 9.5:1+ compression

    270S Series
    The 270S Solid Magnum Cam is the perfect cam for small to medium cubic inch engines. The 270S delivers good low speed torque with a moderate noticeable idle. This cam is an excellent alternative to the 268H.

    282S Series
    The 282S Solid Magnum Cam is great for street machines because it can be driven daily and raced on weekends. This cam features a broad power curve and torque range with a mild rough idle.

    294S Series
    The 294S Solid Magnum Cam is a maximum performance cam. This cam should be used in high compression 4-speed cars. The 294S makes great top-end power and works well with ported heads.

    306S Series
    The 306S Solid Magnum Cam is an excellent grind for large cubic inch Pro-Street type engines. This cam has tremendous high RPM power and needs to be used with headers, intake and higher compression. This cam does not have the advance made into it and will need to be degreed in.

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

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