Nitrous HP Hydraulic Flat Tappet Camshaft Chevy Small Block 262-400ci 1955-98 Lift: .462"/.480"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-12-556-4

Nitrous HP Hydraulic Flat Tappet Camshaft Chevy Small Block 262-400ci 1955-98 Lift: .462"/.480"

$30995
ShippingShips on 09/15/2026
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Chevy Small Block 262-400ci 1955-98
    Nitrous HP Hydraulic Flat Tappet Camshaft
    Chevy Small Block 262-400ci 1955-98
  • Lift: .462"/.480"
  • Duration: 262°/280°
  • Lobe Separation Angle: 113°
  • RPM Range: 1600-5900

    High performance street. With 100-150 HP nitrous kit or small blower.

    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


    High performance street. With 100-150 hp nitrous kit or small blower.

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
Product LineComp Cams Nitrous HP Cams
BrandCOMP CAMS
Package Height2.75
Package Width2.87
Package Length24.5
Weight8.9 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic flat tappet
Grind NumberCS NX262H-13
Exh. Duration Advertised (Deg)280
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.462
Int. Duration @ .050 In. (Deg)218
Basic Operating Rpm Range1,600-5,900
Intake Valve Lift0.462 in (11.735 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)262
Lobe Separation (Deg)113
Rpm Range1600-5900
Advertised Duration262 int./280 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.48
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.462 int./0.480 exh.
QuantitySold individually
Exhaust Valve Lift0.48 in (12.192 mm)
Advertised Intake Duration262
Intake Duration At 050 Inch Lift218
Exhaust Duration At 050 Inch Lift230
Advertised Exhaust Duration280
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift218 int./230 exh.
Valve Springs RequiredYes
Vendor Part Number12-556-4
Package Qty1
Package TypeEA
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