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COMP Cams 11-250-20 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts



COMP Cams 11-250-20 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts

Part Number: 249-11-250-20

XTREME ENERGY 284H-10 Hydraulic Flat Tappet Nitrided Camshaft
Lift .574"/.578"
Duration 284°/296°
RPM Range 2300 to 6500
Lobe Center Angle 110°
$325.99
Ships 09/07/16
if Ordered Today
FREE Shipping

COMP Cams 11-250-20 - Comp Cams 'Xtreme Energy' Hydraulic Flat Tappet Camshafts Details

Chevy 396-454ci Big Block 1965-96

COMP Cams® is the only aftermarket valve train company in America that provides a Pro Plasma™ Nitriding Service in-house. Nitriding is a process by which nitrogen is introduced into iron or steel, causing a material's surface hardness to be increased for improved initial and long-term wear characteristics. It is recognized by metallurgists worldwide as the best way to increase the hardness and lubricity of flat tappet cams to enhance break-in and durability. Nitriding is available for any COMP Cams® flat tappet camshaft, but many popular flat tappet camshafts have already undergone the Pro Plasma™ Nitriding treatment and are on the shelf, ready to be shipped. Don't get blinded by shiny surface finishing or heat-treating - nitriding has been race-proven around the world and documented to deliver superior results. If you don't see the part number camshaft you are looking for, call us at 1-800-999-0853 or e-mail us at camhelp@compcams.com to order a flat tappet camshaft with the nitriding option.

  • Stage 1: Pre-nitrided, unfinished camshaft
  • Stage 2: Nitrided camshaft surface approximately .008"-.010" deep; black oxide finish

  • Specifications:

    Intake Valve Lift (in.)
    0.574
    Exhaust Valve Lift (in.)
    0.578
    RPM Range
    2300-6500
    Int. Duration @ .050 in. (Deg)
    240
    Exh. Duration @ .050 in. (Deg)
    246
    Int. Duration Advertised (Deg)
    294
    Exh. Duration Advertised (Deg)
    296
    Engine Make/Size
    Chevy Big Block (396-454)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Street/Strip
    Manufacturer's Part Number:
    11-250-20

    The Leading Edge of Valve Train Technology

    Comp Cams Xtreme Energy series are perfect for any street or street/strip application where both throttle response and top-end horsepower is desired. These camshafts are designed to take advantage of the latest and greatest in valvetrain technology . Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum. We do not recommend the use of stock valve springs with these camshafts due to the aggressive lobe designs.

    Features:
  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows an increase in duration for improved performance and assists power brakes
  • Excellent performance in street carbureted applications
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios

    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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    • EngineType: V8

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    • EngineType: V8
    • SubModel: SIERRA CLASSIC

    1972 CHEVROLET C30 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

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    • EngineType: V8
    • SubModel: SIERRA GRANDE

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    • EngineType: V8
    • SubModel: SILVERADO

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    • EngineType: V8
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    • SubModel: BASE

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    • EngineType: V8
    • SubModel: CUSTOM DELUXE

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    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: SIERRA CLASSIC

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    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8

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    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

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    • EngineType: V8
    • SubModel: SCOTTSDALE

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    • CC: 7439
    • Liter: 7.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8

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    • EngineType: V8
    • SubModel: SILVERADO

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    • EngineType: V8
    • SubModel: CUSTOM LANDAU

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    • EngineType: V8

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    • CUI: 402
    • EngineType: V8

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    • SubModel: BASE

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    • EngineType: V8
    • SubModel: SCOTTSDALE

    1980-1986 GMC C2500 SUBURBAN

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SIERRA CLASSIC

    1970-1971 CHEVROLET C20 PICKUP

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1970 CHEVROLET IMPALA

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    • Liter: 7.4
    • SubModel: BASE
    • EngineType: V8

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    • Liter: 7.4
    • SubModel: DELUXE
    • EngineType: V8

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    • SubModel: ESTATE WAGON
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    • EngineType: V8

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    • EngineType: V8
    • SubModel: BASE

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    • Liter: 7.0
    • SubModel: BASE
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    • EngineType: V8

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    • EngineType: V8
    • SubModel: NOMAD

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    • EngineType: V8
    • SubModel: BASE

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    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

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    • Liter: 6.5
    • EngineType: V8
    • SubModel: CONCOURS

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

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    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 402
    • EngineType: V8

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    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1979-1980 CHEVROLET C10 SUBURBAN

    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

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    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1970-1971 CHEVROLET CAPRICE

    • CC: 7439
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8

    1980 CHEVROLET K20 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: CUSTOM DELUXE

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    • EngineType: V8
    • SubModel: SCOTTSDALE

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    • EngineType: V8
    • SubModel: S

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    • CC: 6588
    • Liter: 6.6
    • Aspiration: N
    • SubModel: CONCOURS
    • Engine Vin: U
    • CUI: 402
    • EngineType: V8

    1985-1986 GMC C3500 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SIERRA CLASSIC

    1971 CHEVROLET C20 SUBURBAN

    • CC: 6588
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 402
    • EngineType: V8

    1971 CHEVROLET IMPALA

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1979-1986 GMC C2500 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

    1977 CHEVROLET K30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

    1970-1972 GMC C25/C2500 SUBURBAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1968-1969 CHEVROLET BEL AIR

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1968 CHEVROLET K10 SUBURBAN

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1970 CHEVROLET IMPALA

    • CC: 7439
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8

    1980 GMC C1500 SUBURBAN

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SIERRA CLASSIC

    1975-1978 CHEVROLET C30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: CHEYENNE

    1981 CHEVROLET C30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: DELUXE

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1966 CHEVROLET CORVETTE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1980-1986 CHEVROLET C30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SILVERADO

    1972 CHEVROLET BEL AIR

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1980 CHEVROLET C20 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: CUSTOM DELUXE

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: BIG TEN

    1970 CHEVROLET C20 SUBURBAN

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1968-1969 CHEVROLET C10 PICKUP

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1973 CHEVROLET CHEVELLE

    • CC: 7439
    • Liter: 7.4
    • Aspiration: N
    • SubModel: DELUXE
    • Engine Vin: Y
    • CUI: 454
    • EngineType: V8

    1970-1972 CHEVROLET CAPRICE

    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8

    1985 CHEVROLET K20 SUBURBAN

    • Liter: 7.4
    • EngineType: V8
    • SubModel: CUSTOM

    1970-1971 CHEVROLET C30 PICKUP

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

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    • Liter: 6.5
    • EngineType: V8
    • SubModel: 300 DELUXE

    1976-1978 CHEVROLET K20 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET BISCAYNE

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1987-1988 CHEVROLET R30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SILVERADO

    1980 CHEVROLET K10 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SILVERADO

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: SIERRA GRANDE

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: SCOTTSDALE

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    • Liter: 7.4
    • EngineType: V8
    • SubModel: BASE

    1966-1969 CHEVROLET BEL AIR

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1970-1971 CHEVROLET MONTE CARLO

    • CC: 7441
    • Liter: 7.4
    • SubModel: BASE
    • EngineType: V8

    1969 CHEVROLET K10 SUBURBAN

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1987-1988 CHEVROLET V30 PICKUP

    • Liter: 7.4
    • EngineType: V8
    • SubModel: SILVERADO

    1971-1976 CHEVROLET IMPALA

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    • EngineType: V8
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