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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-564-4
Nitrous HP Hydraulic Flat Tappet Camshaft Chevy Small Block 262-400ci 1955-98 Lift: .487"/.501"
$30995
1 left in stock
Ships on Sep 14, 2026
Lowest Price GuaranteeChevy Small Block 262-400ci 1955-98
- Nitrous HP Hydraulic Flat Tappet Camshaft
- 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.
Chevy Small Block 262-400ci 1955-98
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
Weight8.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)244
Cam StyleHydraulic flat tappet
Grind NumberCS NX274H-13
Exh. Duration Advertised (Deg)292
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.487
Int. Duration @ .050 In. (Deg)230
Basic Operating Rpm Range2,400-6,500
Intake Valve Lift0.487 in (12.37 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)113
Rpm Range2400-6500
Advertised Duration274 int./292 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.501
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.487 int./0.501 exh.
QuantitySold individually
Exhaust Valve Lift0.501 in (12.725 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift244
Advertised Exhaust Duration292
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift230 int./244 exh.
Valve Springs RequiredYes
Vendor Part Number12-564-4
Package Qty1
Package TypeEA
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