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Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .512"/.497" Duration 294/312 RPM Range 2500-6400
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-42-602-5

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

$32595
ShippingShips on 09/15/2026
Lowest PriceLowest Price Guarantee

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

    Big Mutha' Thumpr: Street/strip, need 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle

    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
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight9.91 PG
Part CategoryPerformance Parts
UsageStreet/Strip
Intake Valve Lift0.512 in (13.005 mm)
Int. Duration Advertised (Deg)294
Exh. Duration @ .050 In. (Deg)257
Rpm Range2500-6400
Lifter TypeHydraulic Flat Tappet
Exh. Duration Advertised (Deg)312
Engine Make/SizeOlds 260-455
Int. Duration @ .050 In. (Deg)242
Exhaust Valve Lift0.497 in (12.624 mm)
Vendor Part Number42-602-5
Package Qty1
Package TypeEA
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