Nitrous HP Hydraulic Flat Tappet Camshaft Small Kit Chevy Small Block 262-400ci 1955-98 Lift: .487"/.501"
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COMP CAMSPART NUMBER: 249-SK12-564-4

Nitrous HP Hydraulic Flat Tappet Camshaft Small Kit Chevy Small Block 262-400ci 1955-98 Lift: .487"/.501"

$41895
ShippingShips on 09/16/2026
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Chevy Small Block 262-400ci 1955-98
    Nitrous HP Hydraulic Flat Tappet Camshaft Small Kit
    Chevy Small Block 262-400ci 1955-98
  • Lift: .487"/.501"
  • Duration: 274°/292°
  • Lobe Separation Angle: 113°
  • RPM Range: 2400-6500

    Street / Strip applications, 125+ HP kit or medium blower, rough idle

    265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


    Street/strip applications, 125+ hp kit or medium blower, 2500+ stall. Rough idle.

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.

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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 Height5.0
Package Width10.5
Package Length26.0
Weight19.5 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)244
Cam StyleHydraulic flat tappet
Grind NumberCS NX274H-13
Exh. Duration Advertised (Deg)292
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.487
Int. Duration @ .050 In. (Deg)230
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,400-6,500
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.487 in (12.37 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)113
Rpm Range2400-6500
Lifter StyleHydraulic flat tappet
Advertised Duration274 int./292 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.501
Valve Springs IncludedNo
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.487 int./0.501 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.501 in (12.725 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift244
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration292
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./244 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK12-564-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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