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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL12-674-4
Xtreme Energy Mechanical Flat Camshaft and Lifter Kit Lift: .465"/.477"
$45695
Ships on 10/21/2026
Lowest Price GuaranteeChevy Small Block 265-400ci 1955-98
- Xtreme Energy Mechanical Flat Camshaft and Lifter Kit
- Lift: .465"/.477"
- Duration: 256°/252°
- Lobe Separation Angle: 110°
- RPM Range 1000-5500
- 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
Strong torque thru low end and mid-range, good 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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height3.2
Package Width5.6
Package Length25.2
Weight13.15 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)224
Cam StyleMechanical flat tappet
Grind NumberXS256S
Exh. Duration Advertised (Deg)262
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.465
Int. Duration @ .050 In. (Deg)218
Assembly Lubricant IncludedYes
Basic Operating Rpm Range1,000-5,500
Pushrods IncludedNo
Gaskets IncludedNo
Intake Valve Lash0.016 in (0.406 mm)
Rocker Arms IncludedNo
Intake Valve Lift0.465 in (11.811 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)256
Lobe Separation (Deg)110
Rpm Range1000-5600
Lifter StyleMechanical flat tappet
Advertised Duration256 int./262 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.477
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.465 int./0.477 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.477 in (12.116 mm)
Advertised Intake Duration256
Intake Duration At 050 Inch Lift218
Exhaust Duration At 050 Inch Lift224
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration262
Lifter TypeMechanical Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift218 int./224 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL12-674-4
Package Qty1
Package TypeEA
No Questions
No Reviews
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