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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-K12-676-4
Xtreme Energy Mechanical Flat Camshaft Complete Kit Lift: .488"/.501"
$79695
Ships on 10/20/2026
Lowest Price GuaranteeChevy Small Block 265-400ci 1955-98
- Xtreme Energy Mechanical Flat Camshaft Complete Kit
- Lift: .488"/.501"
- Duration: 268°/274°
- Lobe Separation Angle: 110°
- RPM Range 1600-6000
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
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
Great for street machines. Will work with stock converter, best with 2000 stall.
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.1
Package Width10.3
Package Length25.4
Weight23.9 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)236
Cam StyleMechanical flat tappet
Grind NumberCS XS268S-10
Exh. Duration Advertised (Deg)274
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.488
Int. Duration @ .050 In. (Deg)230
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,600-6,000
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.488 in (12.395 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)268
Lobe Separation (Deg)110
Rpm Range1600-6000
Lifter StyleMechanical flat tappet
Advertised Duration268 int./274 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.501
Valve Springs IncludedYes
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.488 int./0.501 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.501 in (12.725 mm)
Advertised Intake Duration268
Outside Diameter Of Outer Spring1.254 in (31.9 mm)
Intake Duration At 050 Inch Lift230
Exhaust Duration At 050 Inch Lift236
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration274
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift230 int./236 exh.
Valve Springs RequiredNo
Lifters IncludedYes
Vendor Part NumberK12-676-4
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
