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Pontiac 265-455ci 8 cyl. 1955-1981
- Xtreme Energy Retro-Fit XR288HR Hydraulic Roller Camshaft Small Kit
- Produces Better Throttle Response
- Produces Top Engine Horsepower
- Delivers Increased Engine Vacuum
- 1 Year Limited Warranty
Pontiac; Super Duty; SD; SD455; HO; 455 HO; Trans-Am; Catalina; Firebird; Formula; 421; 455; 400; 428; 350; 265; 301; 370; 389; 301; 287; 317; 347; Ram Air; Ram Air IV; Ram Air III; Bonneville; Grand Prix; LeMans; Parisienne; Grand Am; Century; Regal;
Lift: .52''/.54''
Duration: 288°/294°
Lobe Separation Angle: 110°
RPM Range: 2200-6000
Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.3
Package Width10.2
Package Length25.3
Weight20.45 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)242
Cam StyleHydraulic roller tappet
Grind NumberXR288HR-10
Exh. Duration Advertised (Deg)294
Locks IncludedNo
Engine Make/SizePontiac 265-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.52
Int. Duration @ .050 In. (Deg)236
Assembly Lubricant IncludedNo
Basic Operating Rpm Range2,200-6,000
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.52 in (13.208 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)288
Lobe Separation (Deg)110
Rpm Range2200-6000
Lifter StyleHydraulic roller
Advertised Duration288 int./294 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.54
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.520 int./0.540 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.54 in (13.716 mm)
Advertised Intake Duration288
Intake Duration At 050 Inch Lift236
Exhaust Duration At 050 Inch Lift242
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration294
Lifter TypeHydraulic Roller
Part FitmentSemi Universal
Duration At 050 Inch Lift236 int./242 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK51-433-9
Package Qty1
Package TypeEA
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