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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-235-2
'Xtreme 4x4' Hydraulic Flat Tappet Camshaft
$29395
3 left in stock
Ships on Nov 09, 2026
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Chevy 262-400ci Small Block 1955-98
- Xtreme 4x4 X4254H Hydraulic Flat Tappet Camshaft
Lift: .447''/.462''
Duration: 254°/262°
Lobe Separation Angle: 111°
RPM Range: 1000-5200
*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.
Strong low-end and mid-range torque, good idle.
| Operating Range: | 1000-5200 RPM |
| Duration Advertised: | 254° Intake / 262° Exhaust |
| Duration @ .050' Lift: | 210° Intake / 218° Exhaust |
| Valve Lift w/1.5 Rockers: | .447' Intake / .462' 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
Strong low end and mid-range torque, 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
BrandCOMP CAMS
Package Height2.85
Package Width9.9
Package Length24.6
Weight8.8 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)218
Cam StyleHydraulic flat tappet
Grind NumberCS X4 254H-11
Exh. Duration Advertised (Deg)262
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.447
Int. Duration @ .050 In. (Deg)210
Basic Operating Rpm Range1,000-5,200
Intake Valve Lift0.447 in (11.354 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)254
Lobe Separation (Deg)111
Rpm Range1000-5200
Advertised Duration254 int./262 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.462
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.447 int./0.462 exh.
QuantitySold individually
Exhaust Valve Lift0.462 in (11.735 mm)
Advertised Intake Duration254
Intake Duration At 050 Inch Lift210
Exhaust Duration At 050 Inch Lift218
Advertised Exhaust Duration262
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift210 int./218 exh.
Valve Springs RequiredYes
Vendor Part Number12-235-2
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
