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Vehicle Info NeededCOMP CAMSPART NUMBER: 249-SK51-220-4
Xtreme Energy 250H-10 Hydraulic Flat Tappet Camshaft Small Kit Lift: .432" /.444" Duration: 250°/260° RPM Range: 600-4800
$42295
Ships on 10/26/2026
Lowest Price GuaranteePontiac 265-455ci V-8 1955-81
- Xtreme Energy 250H-10 Hydraulic Flat Tappet 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;
Very strong torque, excellent mileage, smooth idle.
Lift: .432''/.444''
Duration: 250°/260°
RPM Range: 600-4800
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 Kit
BrandCOMP CAMS
Package Height5.0
Package Width10.5
Package Length26.0
Weight22.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)212
Cam StyleHydraulic flat tappet
Grind NumberXE250H
Exh. Duration Advertised (Deg)260
Locks IncludedNo
Engine Make/SizePontiac 265-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.432
Int. Duration @ .050 In. (Deg)206
Assembly Lubricant IncludedYes
Basic Operating Rpm Range600-4,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.432 in (10.973 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)250
Lobe Separation (Deg)110
Rpm Range600-4800
Lifter StyleHydraulic flat tappet
Advertised Duration250 int./260 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.444
Valve Springs IncludedNo
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.432 int./0.444 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.444 in (11.278 mm)
Advertised Intake Duration250
Intake Duration At 050 Inch Lift206
Exhaust Duration At 050 Inch Lift212
Timing Chain StyleDouble roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration260
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift206 int./212 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberSK51-220-4
Package Qty1
Package TypeEA
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