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Nitrous HP Hydraulic Flat Tappet Camshaft Complete Kit Chevy Big Block 396-454ci 1965-96 Lift: .575"/.595"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K11-568-4

Nitrous HP Hydraulic Flat Tappet Camshaft Complete Kit Chevy Big Block 396-454ci 1965-96 Lift: .575"/.595"

$74495
ShippingShips on 12/18/2026
Lowest PriceLowest Price Guarantee

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Chevy Big Block 396-454ci 1965-96
    Nitrous HP Hydraulic Flat Tappet Camshaft Complete Kit
    Chevy Big Block 396-454ci 1965-96
  • Lift: .575"/.595"
  • Duration: 284°/305°
  • Lobe Separation Angle: 113°
  • RPM Range: 2800-6800

    Pro Street applications with multi-stage nitrous kits or 671 blower and Vortec Supercharger and 3000 stall.

    Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572


    Pro Street applications w/ multi-stage nitrous kits, 671 blower or Vortec Supercharger and 3000+ stall.

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

Designed to work with nitrous to give you the most power possible while still maintaining the low end torque and response needed in the street driven applications. This is accomplished by optimizing the opening and closing events of the valves and the individual lobe profiles to better use the additional fuel and oxygen provided with nitrous kits. Delivers excellent performance off nitrous and incredible gains with nitrous. Also ideal when used with forced induction.

Show MoreFeatures:
  • Wider lobe separation and added exhaust duration from base XE series help shift the power to higher RPM to allow use in nitrous applications
  • Early exhaust opening helps scavenge the extra spent gasses from nitrous or forced induction
  • Better time slips for nitrous passes at the strip

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.

Part TypeCamshaft Kit
Product LineComp Cams Nitrous HP Cams
BrandCOMP CAMS
Package Height5.1
Package Width10.3
Package Length25.5
Weight26.07 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)253
Cam StyleHydraulic flat tappet
Grind NumberCB NX 284H-13
Exh. Duration Advertised (Deg)305
Locks IncludedYes
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.575
Int. Duration @ .050 In. (Deg)240
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,800-6,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.575 in (14.605 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)284
Lobe Separation (Deg)113
Rpm Range2800-6800
Lifter StyleHydraulic flat tappet
Advertised Duration284 int./305 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.595
Valve Springs IncludedYes
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.575 int./0.595 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.595 in (15.113 mm)
Advertised Intake Duration284
Outside Diameter Of Outer Spring1.509 in (38.3 mm)
Intake Duration At 050 Inch Lift240
Exhaust Duration At 050 Inch Lift253
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration305
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift240 int./253 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK11-568-4
Package Qty1
Package TypeEA
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning