Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Lift .512"/.497" Duration 294/312 RPM Range 2500-6400
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-CL42-602-5

Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit Lift .512"/.497" Duration 294/312 RPM Range 2500-6400

$46895
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Oldsmobile 260-455 c.i. 8 cyl. 1967-1990
    Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft and Lifter Kit
    Lift .512"/.497"
    Duration 294/312
    RPM Range 2500-6400

  • Camshaft And Lifter 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

    Olds; Oldsmobile; Cutlass; Cutlass Supreme; 98; Calais; Ciera; Custom Cruiser; Starfire; Firenza; 88; Rocket; Rocket 88; Vista Cruiser; Delta 88; 260; 442; 307; 350; 403; 400; 425; 455


    Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough 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 Height3.0
Package Width5.5
Package Length26.0
Weight14.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)257
Cam StyleHydraulic flat tappet
Grind Number295TH7
Exh. Duration Advertised (Deg)312
Locks IncludedNo
Engine Make/SizeOlds 260-455
Retainers IncludedNo
Intake Valve Lift With Factory Rocker Arm Ratio (I0.512
Int. Duration @ .050 In. (Deg)242
Assembly Lubricant IncludedYes
Basic Operating Rpm Range2,500-6,400
Pushrods IncludedNo
Gaskets IncludedNo
Rocker Arms IncludedNo
Intake Valve Lift0.512 in (13.005 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)294
Lobe Separation (Deg)107
Rpm Range2500-6400
Lifter StyleHydraulic flat tappet
Advertised Duration294 int./312 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.497
Valve Springs IncludedNo
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.512 int./0.497 exh.
QuantitySold as a kit
Valve Stem Seals IncludedNo
Exhaust Valve Lift0.497 in (12.624 mm)
Advertised Intake Duration294
Intake Duration At 050 Inch Lift242
Exhaust Duration At 050 Inch Lift257
Timing Chain And Gears IncludedNo
Advertised Exhaust Duration312
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift242 int./257 exh.
Valve Springs RequiredYes
Lifters IncludedYes
Vendor Part NumberCL42-602-5
Package Qty1
Package TypeEA
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