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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK12-678-4
Xtreme Energy Mechanical Flat Camshaft Small Kit Lift: .520"/.540"
$51695
Ships on 10/20/2026
Lowest Price GuaranteeChevy Small Block 265-400ci 1955-98
- Xtreme Energy Mechanical Flat Camshaft Small Kit
- Lift: .520"/.540"
- Duration: 282°/290°
- Lobe Separation Angle: 110°
- RPM Range 2400-6800
Camshaft: Street/Strip, 2800+ stall, likes headers and gears, 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, 2800+ stall, likes headers and gears, rough idle.
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 Height5.2
Package Width10.6
Package Length25.4
Weight17.05 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)252
Cam StyleMechanical flat tappet
Grind NumberXS282S
Exh. Duration Advertised (Deg)290
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.52
Int. Duration @ .050 In. (Deg)244
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,400-6,800
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.52 in (13.208 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)282
Lobe Separation (Deg)110
Rpm Range2400-6800
Lifter StyleMechanical flat tappet
Advertised Duration282 int./290 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.54
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.520 int./0.540 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.54 in (13.716 mm)
Advertised Intake Duration282
Intake Duration At 050 Inch Lift244
Exhaust Duration At 050 Inch Lift252
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration290
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift244 int./252 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK12-678-4
Package Qty1
Package TypeEA
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