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COMP Cams Thumpr Hydraulic Flat Tappet Camshaft Lift .486"/.473" Duration 279/297 RPM Range 2000-5800

COMP Cams 20-600-4

249-20-600-4

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COMP Cams Thumpr Hydraulic Flat Tappet Camshaft Lift .486"/.473" Duration 279/297 RPM Range 2000-5800 $137.99
Thumpr Hydraulic Flat Tappet Camshaft
Lift .486"/.473"
Duration 279/297
RPM Range 2000-5800

COMP Cams 20-600-4 Details

Chrysler 273-360 C.I. 8 CYL. 1964-2000

Hydraulic-(Thumpr™) High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.

Specifications:

Exhaust Valve Lift (in.)
0.473
Intake Valve Lift (in.)
0.486
RPM Range
2000-5800
Int. Duration @ .050 in. (Deg)
227
Exh. Duration @ .050 in. (Deg)
241
Int. Duration Advertised (Deg)
279
Exh. Duration Advertised (Deg)
297
Lifter Type
Hydraulic Flat Tappet
Usage
Street/Performance
Engine Make/Size
Mopar 273-360
Advertised Duration
279 int./296 exh.
Advertised Exhaust Duration
296
Advertised Intake Duration
279
Basic Operating RPM Range
2,000-5,800
Cam Style
Hydraulic flat tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
227 int./241 exh.
Exhaust Duration at 050 inch Lift
241
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.473
Grind Number
279TH7
Intake Duration at 050 inch Lift
227
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.486
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.486 int./0.473 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
107
Manufacturer's Part Number:
20-600-4

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 20-600-4 fit your vehicle?

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    Aspiration

    1975-1978 PLYMOUTH FURY

    • Liter: 5.9
    • SubModel: SPORT SUBURBAN
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970-1974 PLYMOUTH DUSTER

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1971-1974 DODGE W200 PICKUP

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966 DODGE POLARA

    • CC: 4473
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1974-1980 PLYMOUTH TRAILDUSTER

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 DODGE CORONET

    • CC: 5212
    • Liter: 5.2
    • SubModel: DELUXE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975 PLYMOUTH ROAD RUNNER

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 PLYMOUTH BARRACUDA

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1969-1973 PLYMOUTH FURY II

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1969-1970 DODGE CORONET

    • CC: 5212
    • Liter: 5.2
    • SubModel: DELUXE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1976 DODGE D200 PICKUP

    • Liter: 5.9
    • SubModel: CUSTOM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1981-1986 DODGE B150 VAN

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1966-1967 PLYMOUTH FURY

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1985 DODGE W150 PICKUP

    • CC: 5900
    • Liter: 5.9
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1980 PLYMOUTH GRAN FURY

    • Liter: 5.2
    • SubModel: SALON
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1971-1974 PLYMOUTH FURY III

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966 PLYMOUTH FURY

    • Liter: 5.2
    • SubModel: VIP
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1974 DODGE B200 VAN

    • Liter: 5.2
    • SubModel: MAXI WAGON
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1971 PLYMOUTH FURY

    • CC: 5900
    • Liter: 5.9
    • SubModel: SPORT
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970 PLYMOUTH SATELLITE

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPORT
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968-1969 DODGE A100 PICKUP

    • Liter: 5.2
    • SubModel: SPORTSMAN
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1976 DODGE MONACO

    • Liter: 5.9
    • SubModel: ROYAL
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974 DODGE CORONET

    • CC: 5900
    • Liter: 5.9
    • SubModel: CRESTWOOD
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966-1968 DODGE CHARGER

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1970 DODGE POLARA

    • CC: 5212
    • Liter: 5.2
    • SubModel: CUSTOM
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1979-1981 CHRYSLER NEWPORT

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1978 PLYMOUTH FURY

    • Liter: 5.9
    • SubModel: SUBURBAN
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1975 PLYMOUTH VALIANT

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 DODGE DART

    • EngineType: ALL
    • SubModel: SPORT 360

    1979-1981 DODGE ST. REGIS

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1974 DODGE B200 VAN

    • Liter: 5.9
    • SubModel: MAXI
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1971-1974 PLYMOUTH SCAMP

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1965-1967 DODGE CORONET

    • Liter: 5.2
    • SubModel: 440
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1984 DODGE W150 PICKUP

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1969-1970 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: CUSTOM
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1973 DODGE B100 VAN

    • Liter: 5.9
    • SubModel: SPORTSMAN
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1972-1980 DODGE B300 VAN

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1976 DODGE MONACO

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1977 DODGE ROYAL MONACO

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 PLYMOUTH VALIANT

    • CC: 5212
    • Liter: 5.2
    • SubModel: SIGNET
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1976 DODGE DART

    • Liter: 5.9
    • SubModel: SWINGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPECIAL EDITION
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 PLYMOUTH PB300 VAN

    • CC: 5899
    • Liter: 5.9
    • SubModel: VOYAGER EX WAGON
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1969-1970 DODGE MONACO

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1977 DODGE CHARGER

    • Liter: 5.9
    • SubModel: SPECIAL EDITION
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1986 DODGE W100 PICKUP

    • Liter: 5.9
    • SubModel: CUSTOM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1971 DODGE W300 PICKUP

    • CC: 5899
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1969 DODGE DART

    • CC: 5572
    • Liter: 5.6
    • SubModel: GT
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1970 DODGE A100 VAN

    • EngineType: ALL
    • SubModel: ALL

    1969-1971 DODGE DART

    • CC: 5572
    • Liter: 5.6
    • SubModel: SWINGER
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1975-1978 DODGE MONACO

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1979 DODGE D400

    • EngineType: ALL
    • SubModel: ALL

    1979 DODGE D100 PICKUP

    • Liter: 5.9
    • SubModel: WARLOCK II
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974 PLYMOUTH PB200 VAN

    • Liter: 5.9
    • SubModel: VOYAGER EX WAGON
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1981 DODGE W350 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1969 PLYMOUTH SATELLITE

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1971 DODGE POLARA

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1968 PLYMOUTH FURY III

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1976-1978 DODGE D100 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: WARLOCK
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1981-1982 DODGE D350 PICKUP

    • EngineType: ALL
    • SubModel: BASE

    1975 PLYMOUTH GRAN FURY

    • Liter: 5.2
    • SubModel: CUSTOM
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1977-1980 DODGE D200 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1977-1979 DODGE D300 PICKUP

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1972 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: DEMON
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 DODGE D100 PICKUP

    • CC: 5900
    • Liter: 5.9
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1971 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPECIAL
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1977 DODGE ROYAL MONACO

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1976-1977 DODGE ASPEN

    • Liter: 5.9
    • SubModel: SPECIAL EDITION
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1979-1980 PLYMOUTH PB300 VAN

    • EngineType: ALL
    • SubModel: VOYAGER

    1975 PLYMOUTH PB300 VAN

    • EngineType: ALL
    • SubModel: VOYAGER

    1975-1980 DODGE W200 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1978-1979 DODGE DIPLOMAT

    • Liter: 5.9
    • SubModel: MEDALLION
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970-1974 PLYMOUTH VALIANT

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1984-1986 DODGE D100 PICKUP

    • Liter: 5.9
    • SubModel: CUSTOM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1968 PLYMOUTH FURY

    • CC: 5212
    • Liter: 5.2
    • SubModel: VIP
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1969-1973 PLYMOUTH FURY I

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1974 DODGE B200 VAN

    • Liter: 5.9
    • SubModel: SPORTSMAN
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966 DODGE CORONET

    • Liter: 4.5
    • SubModel: DELUXE
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1969-1974 DODGE CHARGER

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 PLYMOUTH ROAD RUNNER

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974 DODGE D200 PICKUP

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1964-1974 DODGE D300 PICKUP

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1977 DODGE W100 PICKUP

    • Liter: 5.9
    • SubModel: CUSTOM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1965-1967 DODGE CORONET

    • CC: 4473
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1973-1974 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPORT
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 DODGE MONACO

    • CC: 5900
    • Liter: 5.9
    • SubModel: CUSTOM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1981 PLYMOUTH PB250 VAN

    • Liter: 5.9
    • SubModel: VOYAGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970 PLYMOUTH SATELLITE

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1983 CHRYSLER FIFTH AVENUE

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 DODGE B100 VAN

    • Liter: 5.9
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1976-1978 PLYMOUTH PB300 VAN

    • Liter: 5.2
    • SubModel: VOYAGER
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1976 DODGE DART

    • Liter: 5.2
    • SubModel: SWINGER
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1978 DODGE MAGNUM

    • Liter: 5.2
    • SubModel: XE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1974 DODGE CHARGER

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974-1978 PLYMOUTH PB200 VAN

    • Liter: 5.9
    • SubModel: VOYAGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1984-1986 PLYMOUTH GRAN FURY

    • EngineType: ALL
    • SubModel: SALON

    1975 DODGE DART

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972 PLYMOUTH FURY

    • CC: 5900
    • Liter: 5.9
    • SubModel: GRAN SEDAN
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1965-1967 DODGE CORONET

    • Liter: 4.5
    • SubModel: 440
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1975-1976 DODGE MONACO

    • Liter: 5.9
    • SubModel: ROYAL BROUGHAM
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )
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