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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-11-556-4
Nitrous HP Hydraulic Flat Tappet Camshaft Chevy Big Block 396-454ci 1965-96 Lift: .505"/.520"
$30995
Ships on 10/23/2026
Lowest Price GuaranteeChevy Big Block 396-454ci 1965-96
- Nitrous HP Hydraulic Flat Tappet Camshaft
- Lift: .505"/.520"
- Duration: 262°/280°
- Lobe Separation Angle: 113°
- RPM Range: 1600-5900
High performance street, 100-150 horse nitrous kit or small blower.Chevelle, Camaro, Corvette, Stingray, Silverado, C10, Firebird, Chevrolet, Big Block, Chevy, BBC, 454, 427, 502, 396, Caprice, Malibu, Impala, Nova, Monte Carlo, S10, 572
High performance street, 100-150 HP nitrous kit or small blower.
Chevy Big Block 396-454ci 1965-96
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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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width2.87
Package Length24.5
Weight11.05 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic flat tappet
Grind NumberCB NX 262H-13
Exh. Duration Advertised (Deg)280
Engine Make/SizeChevy Big Block (396-454)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.505
Int. Duration @ .050 In. (Deg)218
Basic Operating Rpm Range1,600-5,900
Intake Valve Lift0.505 in (12.827 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 (0.52
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.505 int./0.520 exh.
QuantitySold individually
Exhaust Valve Lift0.52 in (13.208 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 Number11-556-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
