Competition Cams 31-601-5 Thumpr Camshaft

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

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Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.

• 3 Grinds To Fit All Of Your Performance Needs
• Unique Design
• Maximizes Sound And Mid To High RPM Power
• Ensures Safe Piston-To-Valve Clearance
• Proven To Generate 25+ RWHP Gains
• Does Not Compromise Durability
• 1 Year Limited Warranty

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Application Summary:

Year	Make/Model
1963-1969	Ford Country Sedan
1971-1972	Ford Country Sedan
1963-1972	Ford Country Squire
1987-1991	Ford Country Squire
1965-1967	Ford Custom
1964-1972	Ford Custom 500
1963-1970	Ford Fairlane
1978-1979	Ford Fairmont
1964-1970	Ford Falcon
1965	Ford Falcon Sedan Delivery
1963	Ford Ford 300
1963-1967	Ford Galaxie
1963-1972	Ford Galaxie 500
1972-1974	Ford Gran Torino
1975-1980	Ford Granada
1966-1969	Ford GT40
1965-1972	Ford LTD
1977-1986	Ford LTD
1987-1991	Ford LTD Crown Victoria
1977-1979	Ford LTD II
1971-1977	Ford Maverick
1964-1973	Ford Mustang
1979	Ford Mustang
1982-1995	Ford Mustang
1975-1978	Ford Mustang II
1963-1972	Ford Ranch Wagon
1977-1981	Ford Thunderbird
1983-1988	Ford Thunderbird
1991-1993	Ford Thunderbird
1968-1974	Ford Torino
1980	Lincoln Continental
1982-1987	Lincoln Continental
1980-1983	Lincoln Mark VI
1984-1992	Lincoln Mark VII
1981-1990	Lincoln Town Car
1977-1980	Lincoln Versailles
1964-1967	Mercury Caliente
1979	Mercury Capri
1982-1986	Mercury Capri
1987-1991	Mercury Colony Park
1964-1969	Mercury Comet
1971-1977	Mercury Comet
1967	Mercury Commuter
1967-1969	Mercury Cougar
1977-1981	Mercury Cougar
1983-1988	Mercury Cougar
1991-1993	Mercury Cougar
1964-1970	Mercury Cyclone
1979-1991	Mercury Grand Marquis
1979-1982	Mercury Marquis
1975-1980	Mercury Monarch
1968-1974	Mercury Montego
1964-1967	Mercury Villager
1966-1967	Mercury Voyager
1978	Mercury Zephyr