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Pontiac 265-455ci 8 cyl. 1955-1981
- Xtreme Energy Retro-Fit XR276HR Hydraulic Roller Camshaft & Lifter Kit
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
Lift: .502''/.510''
Duration: 276°/282°
Lobe Separation Angle: 110°
RPM Range: 1800-5600
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height3.4
Package Width6.1
Package Length25.4
Weight15.55 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)230
Cam StyleHydraulic roller tappet
Grind NumberXR276HR
Exh. Duration Advertised (Deg)282
Locks IncludedNo
Engine Make/SizePontiac 265-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.502
Int. Duration @ .050 In. (Deg)224
Assembly Lubricant IncludedNo
Basic Operating Rpm Range1,800-5,600
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.502 in (12.751 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)276
Lobe Separation (Deg)110
Rpm Range1800-5000
Lifter StyleHydraulic roller
Advertised Duration276 int./282 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.51
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.502 int./0.510 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.51 in (12.954 mm)
Advertised Intake Duration276
Intake Duration At 050 Inch Lift224
Exhaust Duration At 050 Inch Lift230
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration282
Lifter TypeHydraulic Roller
Duration At 050 Inch Lift224 int./230 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL51-423-9
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
