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

COMP Cams K42-602-5

249-K42-602-5

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Estimated to ship directly from the manufacturer on 07/02/18
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COMP Cams Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Complete Kit Lift .512"/.497" Duration 294/312 RPM Range 2500-6400 $489.99
Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft Complete Kit
Lift .512"/.497"
Duration 294/312
RPM Range 2500-6400

COMP Cams K42-602-5 Details

Oldsmobile 260-455 c.i. 8 cyl. 1967-1990

  • Complete 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

  • Specifications:

    Exhaust Valve Lift (in.)
    0.497
    Intake Valve Lift (in.)
    0.512
    Int. Duration @ .050 in. (Deg)
    242
    Exh. Duration @ .050 in. (Deg)
    257
    Int. Duration Advertised (Deg)
    294
    Exh. Duration Advertised (Deg)
    312
    Lifter Type
    Hydraulic Flat Tappet
    Engine Make/Size
    Olds 260-455
    RPM Range
    2500-6400
    Usage
    Street/Strip
    Manufacturer's Part Number:
    K42-602-5

    Thumpr Camshafts are the hottest cams to hit the streets in more than a decade. That's because they give you the big cam sound you're looking for, without the drawbacks. Applying a camshaft design originally created for sports car endurance racing, they incorporate early exhaust valve opening, long exhaust duration, and a generous amount of intake and exhaust overlap. Best of all, Thumprs will not negatively impact power output or streetability.

    Features:
  • Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
  • Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters and more rear gear


    Thumpr Sound ClipClick to Listen

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

  • Does COMP Cams K42-602-5 fit your vehicle?

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    Aspiration

    1972-1973 BUICK LESABRE

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 PONTIAC FIREBIRD

    • Liter: 5.7
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 BUICK LESABRE

    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1988 OLDSMOBILE CUTLASS SUPREME

    • EngineType: ALL
    • SubModel: CLASSIC

    1981 BUICK LESABRE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1983 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.0
    • SubModel: HURST
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1974 CHEVROLET IMPALA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1983 BUICK ESTATE WAGON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: LIMITED

    1974 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 BUICK ELECTRA

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: 225 LIMITED
    • Engine Vin: V
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968-1970 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 OLDSMOBILE OMEGA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BROUGHAM
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 OLDSMOBILE DELTA 88

    • CC: 7457
    • Liter: 7.5
    • SubModel: ROYALE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1971 OLDSMOBILE CUTLASS

    • CC: 5737
    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 PONTIAC LEMANS

    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 BUICK LESABRE

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978 OLDSMOBILE CUTLASS SALON

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1984 OLDSMOBILE CUTLASS CALAIS

    • EngineType: ALL
    • SubModel: HURST

    1979 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 PONTIAC CATALINA

    • Liter: 5.0
    • SubModel: SAFARI
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1977-1978 BUICK LESABRE

    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1977 OLDSMOBILE CUTLASS SUPREME

    • Liter: 6.6
    • SubModel: COLONNADE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1977 OLDSMOBILE CUTLASS

    • Liter: 6.6
    • SubModel: S
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1981 PONTIAC BONNEVILLE

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1978-1980 OLDSMOBILE DELTA 88

    • Liter: 5.7
    • SubModel: ROYALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE DELTA 88

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: ROYALE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1986-1990 BUICK LESABRE

    • EngineType: ALL
    • SubModel: ESTATE WAGON

    1976 OLDSMOBILE CUTLASS TIARA

    • EngineType: ALL
    • SubModel: ALL

    1976 OLDSMOBILE DELTA 88

    • EngineType: ALL
    • SubModel: ALL

    1981 PONTIAC BONNEVILLE

    • Liter: 5.0
    • SubModel: SAFARI
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1976-1977 OLDSMOBILE CUTLASS SUPREME

    • Liter: 4.3
    • SubModel: COLONNADE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1980-1981 OLDSMOBILE CUTLASS

    • Liter: 4.3
    • SubModel: BROUGHAM
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1981-1985 BUICK ELECTRA

    • Liter: 5.0
    • SubModel: ESTATE WAGON
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1980 BUICK RIVIERA

    • Liter: 5.0
    • SubModel: S
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1978 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: XSR

    1981 PONTIAC BONNEVILLE

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1986-1988 CHEVROLET CAPRICE

    • Liter: 5.0
    • SubModel: CLASSIC
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1986-1987 BUICK REGAL

    • Liter: 5.0
    • SubModel: LIMITED
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1977 OLDSMOBILE CUTLASS

    • Liter: 6.6
    • SubModel: VISTA CRUISER
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1977 BUICK REGAL

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SR
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 PONTIAC VENTURA

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1969-1971 OLDSMOBILE 442

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1976 OLDSMOBILE CUTLASS

    • Liter: 7.5
    • SubModel: COLONNADE S
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1977 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 PONTIAC BONNEVILLE

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1982 OLDSMOBILE CUTLASS SUPREME

    • Liter: 4.3
    • SubModel: BROUGHAM
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1967 OLDSMOBILE DELTA 88

    • CC: 6966
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 425
    • EngineType: V8 ( 7.0 L / 425 )

    1982 BUICK RIVIERA

    • Liter: 5.0
    • SubModel: LIMITED EDITION
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1968-1971 OLDSMOBILE DELTA 88

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972-1973 CHEVROLET NOVA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1986 CADILLAC FLEETWOOD

    • EngineType: ALL
    • SubModel: BROUGHAM DELEGANCE

    1976 PONTIAC LEMANS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1970 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: ROYALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 OLDSMOBILE 98

    • Liter: 6.6
    • SubModel: LUXURY
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1973 BUICK CENTURY

    • CC: 7456
    • Liter: 7.5
    • SubModel: LUXUS
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE VISTA CRUISER

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC VENTURA

    • Liter: 4.3
    • SubModel: CUSTOM
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1973-1974 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 BUICK LESABRE

    • Liter: 5.7
    • Aspiration: N
    • SubModel: LIMITED
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE DELTA 88

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: ROYALE
    • Engine Vin: T
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1972 PONTIAC CATALINA

    • CC: 7457
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1978-1979 CADILLAC SEVILLE

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1973 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 CHEVROLET CAMARO

    • CC: 5736
    • Liter: 5.7
    • Aspiration: N
    • SubModel: LT
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1980-1981 OLDSMOBILE DELTA 88

    • Liter: 5.0
    • SubModel: HOLIDAY
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1978 BUICK RIVIERA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: LXXV ANNIVERSARY EDITION
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 OLDSMOBILE CUTLASS SUPREME

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1977-1978 BUICK RIVIERA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1967 OLDSMOBILE DELTA 88

    • EngineType: ALL
    • SubModel: CUSTOM

    1970-1971 OLDSMOBILE CUTLASS SUPREME

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 BUICK RIVIERA

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 BUICK ESTATE WAGON

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1974 BUICK ELECTRA

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: 225 CUSTOM
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1982 OLDSMOBILE CUTLASS CRUISER

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1977 OLDSMOBILE TORONADO

    • Liter: 6.6
    • SubModel: XS
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1980-1985 OLDSMOBILE DELTA 88

    • Liter: 5.0
    • SubModel: ROYALE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1980 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET MALIBU

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET NOVA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1986-1990 OLDSMOBILE CUSTOM CRUISER

    • EngineType: ALL
    • SubModel: ALL

    1981-1984 BUICK ELECTRA

    • Liter: 5.0
    • SubModel: LIMITED
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1979 OLDSMOBILE CUTLASS CALAIS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1972-1973 BUICK LESABRE

    • CC: 7456
    • Liter: 7.5
    • Aspiration: N
    • SubModel: CUSTOM
    • Engine Vin: U
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1980 OLDSMOBILE TORONADO

    • Liter: 5.7
    • SubModel: XSC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET CORVETTE

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 BUICK ELECTRA

    • Liter: 5.7
    • Aspiration: N
    • SubModel: PARK AVENUE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 OLDSMOBILE DELTA 88

    • CC: 5737
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 OLDSMOBILE CUTLASS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980 OLDSMOBILE CUTLASS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1976-1977 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: COLONNADE S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 OLDSMOBILE CUTLASS SUPREME

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1976-1977 CADILLAC SEVILLE

    • EngineType: ALL
    • SubModel: ALL
    Items You Need
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