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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-234-2
Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Only Lift: .447" /.454" Duration: 256°/268° RPM Range: 1000-5200
$29395
4 left in stock
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Lowest Price GuaranteeChevy 262-400ci Small Block 1955-98
- Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Only
Lift: .447''/.454''
Duration: 256°/268°
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 torque thru low end & mid-range, good idle.
| Operating Range: | 1000-5200 RPM |
| Duration Advertised: | 256° Intake / 268° Exhaust |
| Duration @ .050' Lift: | 212° Intake / 218° Exhaust |
| Valve Lift w/1.5 Rockers: | .447' Intake / .454' Exhaust |
| Lobe Separation Angle: | 110° |
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.
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Part TypeCamshaft
BrandCOMP CAMS
Package Height2.8
Package Width2.9
Package Length24.3
Weight8.99 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)218
Cam StyleHydraulic flat tappet
Grind NumberCS XE256H-10
Exh. Duration Advertised (Deg)268
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.447
Int. Duration @ .050 In. (Deg)212
Basic Operating Rpm Range1,000-5,200
Intake Valve Lift0.447 in (11.354 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)256
Lobe Separation (Deg)110
Rpm Range1000-5200
Advertised Duration256 int./268 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.454
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.447 int./0.454 exh.
QuantitySold individually
Exhaust Valve Lift0.454 in (11.532 mm)
Advertised Intake Duration256
Intake Duration At 050 Inch Lift212
Exhaust Duration At 050 Inch Lift218
Advertised Exhaust Duration268
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift212 int./218 exh.
Valve Springs RequiredYes
Vendor Part Number12-234-2
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
