Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .478"/.465" Duration 279/297 RPM Range 2000-5800
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-K51-600-5

Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .478"/.465" Duration 279/297 RPM Range 2000-5800

$78195
ShippingShips on 09/15/2026
Lowest PriceLowest Price Guarantee

Pontiac 265-455ci 8 cyl. 1955-1981
    Thumpr Hydraulic Flat Tappet Camshaft Complete Kit
    Lift .478"/.465"
    Duration 279/297
    RPM Range 2000-5800

  • Complete Camshaft Kit
  • 3 Grinds To Fit All Of Your Performance Needs
  • Long Exhaust Duration
  • Produces A Powerful Hard-Hitting Exhaust Note
  • Excellent Horsepower Gains And Broad Torque Curve
  • Delivers Real Seat Of The Pants Performance
  • Designed For Use w/Latest In ValveTrain Components
  • 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;


    High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping 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.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeCamshaft Kit
BrandCOMP CAMS
Package Height5.2
Package Width10.3
Package Length25.5
Weight23.64 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)241
Cam StyleHydraulic flat tappet
Grind Number279TH7
Exh. Duration Advertised (Deg)297
Locks IncludedYes
Engine Make/SizePontiac 265-455
Retainers IncludedYes
Intake Valve Lift With Factory Rocker Arm Ratio (I0.478
Int. Duration @ .050 In. (Deg)227
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,000-5,800
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.478 in (12.141 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)279
Lobe Separation (Deg)107
Rpm Range2000-5800
Lifter StyleHydraulic flat tappet
Advertised Duration279 int./297 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.465
Valve Springs IncludedYes
UsageStreet/Hi-Performance
Valve Lift With Factory Rocker Arm Ratio0.478 int./0.465 exh.
QuantitySold as a kit
Valve Stem Seals IncludedYes
Exhaust Valve Lift0.465 in (11.811 mm)
Advertised Intake Duration279
Outside Diameter Of Outer Spring1.437 in (36.5 mm)
Intake Duration At 050 Inch Lift227
Exhaust Duration At 050 Inch Lift241
Timing Chain StyleDouble non-roller
Timing Chain And Gears IncludedYes
Advertised Exhaust Duration297
Lifter TypeHydraulic Flat Tappet
Duration At 050 Inch Lift227 int./241 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberK51-600-5
Package Qty1
Package TypeEA
No Questions
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