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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK11-246-3
Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Small Kit Lift: .552"/.555" Duration: 274°/286° RPM Range: 1800-6000
$44795
Ships on 09/15/2026
Lowest Price GuaranteeChevy 396-454ci Big Block 1965-96
- Xtreme Energy 274H Hydraulic Flat Tappet Camshaft Small Kit
- High performance street, very strong mid-range, with headers & 2500+ stall
Installation note: Stock springs cannot be used.
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, very strong mid-range, with headers and 2200+ stall.
Lift: .552"/.555''
Duration: 274°/286°
RPM Range: 1800-6000
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 Height6.6
Package Width9.9
Package Length26.1
Weight19.6 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleHydraulic flat tappet
Grind NumberCB XE274H-10
Exh. Duration Advertised (Deg)286
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-454)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.552
Int. Duration @ .050 In. (Deg)230
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,800-6,000
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.552 in (14.021 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)274
Lobe Separation (Deg)110
Rpm Range1800-6000
Lifter StyleHydraulic flat tappet
Advertised Duration274 int./286 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.555
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.552 int./0.555 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.555 in (14.097 mm)
Advertised Intake Duration274
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration286
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK11-246-3
Package Qty1
Package TypeEA
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