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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK12-256-4
Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Small Kit Lift: .449" /.456" Duration: 256°/268° RPM Range: 1200-5200
$45795
Ships on 10/23/2026
Lowest Price GuaranteeChevy 262-400ci Small Block 1987-98 Computer Controller
- Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Small Kit
- 1987-98 Computer Controlled
- Best in 305 or 350 Tuned Port Injected engines
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
Best in 305 or 350 tuned port injected engines.
Lift: .449''/.456''
Duration: 256°/268°
RPM Range: 1200-5200
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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.5
Package Length26.0
Weight17.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)218
Cam StyleHydraulic flat tappet
Grind NumberCS XE256H-12
Exh. Duration Advertised (Deg)268
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.449
Int. Duration @ .050 In. (Deg)212
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,200-5,200
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.449 in (11.405 mm)
Computer-Controlled CompatibleYes
Int. Duration Advertised (Deg)256
Lobe Separation (Deg)112
Rpm Range1200-5200
Lifter StyleHydraulic flat tappet
Advertised Duration256 int./268 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.456
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.449 int./0.456 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.456 in (11.582 mm)
Advertised Intake Duration256
Intake Duration At 050 Inch Lift212
Exhaust Duration At 050 Inch Lift218
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration268
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift212 int./218 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK12-256-4
Package Qty1
Package TypeEA
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