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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-12-416-8
Xtreme Marine XM264HR Retro-Fit Hydraulic Roller Camshaft Only Lift .488"/.495" Duration 264°/270° RPM Range 1200-5200
$57795
Ships on 09/15/2026
Lowest Price GuaranteeChevrolet 262-400ci 1955-1998 Retro-Fit
- Xtreme Marine XM264HR Retro-Fit Hydraulic Roller Camshaft Only
Lift .488"/.495"
Duration 264°/270°
RPM Range 1200-5200
Hydraulic Roller-Good for inboard /outboard pleasure boat, skiing and good economy.
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
Good for inboard/outboard pleasure boat, skiing and good economy.
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 Width3.4
Package Length24.3
Weight8.95 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)218
Cam StyleHydraulic roller tappet
Grind NumberCS XM 264HR-12
Exh. Duration Advertised (Deg)270
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.488
Int. Duration @ .050 In. (Deg)212
Basic Operating Rpm Range1,200-5,200
Intake Valve Lift0.488 in (12.395 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)264
Lobe Separation (Deg)112
Rpm Range1200-5200
Advertised Duration264 int./270 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.495
UsageMarine
Valve Lift With Factory Rocker Arm Ratio0.488 int./0.495 exh.
QuantitySold individually
Exhaust Valve Lift0.495 in (12.573 mm)
Advertised Intake Duration264
Intake Duration At 050 Inch Lift212
Exhaust Duration At 050 Inch Lift218
Advertised Exhaust Duration270
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift212 int./218 exh.
Valve Springs RequiredYes
Vendor Part Number12-416-8
Package Qty1
Package TypeEA
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