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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK08-423-8
Comp Cams Xtreme Energy Hydraulic Roller Camshafts
$96295
Ships on Oct 27, 2026
Lowest Price GuaranteeCurrently Unavailable
This product is currently not available. Please call customer service for assistance at 1-800-345-4545.
Chevy 305-350ci Small Block 1987-98
For engines originally equipped with a hydraulic roller camshaft, except LT1 and LT4.
For engines originally equipped with a hydraulic roller camshaft, except LT1 and LT4.
- Xtreme Energy XR276HR Hydraulic Roller Camshaft Small Kit (CARBURETED)
- High Performance Street Machines, 2000+ stall, gears, choppy idle
Installation Note: Stock springs cannot be used.
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 machines, 2000+ stall, gears, choppy idle.
Lift: .502''/.510''
Duration: 276°/282°
Lobe Separation Angle: 110°
RPM Range: 1900-5600
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 Height5.3
Package Width10.5
Package Length25.3
Weight17.82 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic roller tappet
Grind NumberCS XR276HR-10
Exh. Duration Advertised (Deg)282
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.502
Int. Duration @ .050 In. (Deg)224
Assembly Lubricant IncludedNo
Basic Operating Rpm Range1,900-5,600
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.502 in (12.751 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)276
Lobe Separation (Deg)110
Rpm Range1900-5600
Lifter StyleHydraulic roller
Advertised Duration276 int./282 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.502 int./0.510 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration276
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift230
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration282
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift224 int./230 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK08-423-8
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
