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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-CL12-231-2
'Xtreme 4x4' Hydraulic Flat Tappet Camshaft
$38295
Ships on 10/19/2026
Lowest Price GuaranteeChevy 262-400ci Small Block 1955-98
- Xtreme 4x4 X4250H Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .432''/.453''
Duration: 250°/258°
Lobe Separation Angle: 111°
RPM Range: 600-4600
*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.
Very strong torque, smooth idle, excellent mileage.
| Operating Range: | 600-4600 RPM |
| Duration Advertised: | 250° Intake / 258° Exhaust |
| Duration @ .050' Lift: | 206° Intake / 214° Exhaust |
| Valve Lift w/1.5 Rockers: | .432' Intake / .453' Exhaust |
| Lobe Separation Angle: | 111° |
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
Very strong torque, smooth idle, excellent mileage.
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 Height2.5
Package Width5.5
Package Length26.0
Weight13.5 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)214
Cam StyleHydraulic flat tappet
Grind NumberCS X4 250H-11
Exh. Duration Advertised (Deg)258
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.432
Int. Duration @ .050 In. (Deg)206
Assembly Lubricant IncludedYes
Basic Operating Rpm Range600-4,600
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.432 in (10.973 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)250
Lobe Separation (Deg)111
Rpm Range600-4600
Lifter StyleHydraulic flat tappet
Advertised Duration250 int./258 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.453
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.432 int./0.453 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.453 in (11.506 mm)
Advertised Intake Duration250
Intake Duration At 050 Inch Lift206
Exhaust Duration At 050 Inch Lift214
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration258
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift206 int./214 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL12-231-2
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
