COMP Cams Camshaft FC 283Th R7 Thumper R

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.
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This Part Fits:

Year	Make	Model	Submodel
1971-1974	DeTomaso	Pantera	Base
1981-1985	DeTomaso	Pantera	GT5
1984-1986	DeTomaso	Pantera	GT5-S
1981	DeTomaso	Pantera	GTS
1978-1982	Ford	Bronco	Custom
1978	Ford	Bronco	Northland
1978-1981	Ford	Bronco	Ranger XLT
1982	Ford	Bronco	XLS
1982	Ford	Bronco	XLT Lariat
1969-1974	Ford	Country Sedan	Base
1969-1974	Ford	Country Squire	Base
1969-1972	Ford	Custom	Base
1969-1977	Ford	Custom 500	Base
1975-1977	Ford	Custom 500	Ranch Wagon
1980-1981	Ford	E-250 Econoline	Base
1980-1981	Ford	E-250 Econoline	Chateau
1980-1981	Ford	E-250 Econoline	Custom
1980-1981	Ford	E-250 Econoline Club Wagon	Base
1980-1981	Ford	E-250 Econoline Club Wagon	Chateau
1980-1981	Ford	E-250 Econoline Club Wagon	Custom
1980-1981	Ford	E-350 Econoline	Base
1980-1981	Ford	E-350 Econoline	Chateau
1980-1981	Ford	E-350 Econoline	Custom
1980-1981	Ford	E-350 Econoline Club Wagon	Base
1980-1981	Ford	E-350 Econoline Club Wagon	Chateau
1980-1981	Ford	E-350 Econoline Club Wagon	Custom
1975-1976	Ford	Elite	Base
1977-1978	Ford	F-100	Base
1977-1979	Ford	F-100	Custom
1977-1978	Ford	F-100	Northland
1977-1979	Ford	F-100	Ranger
1978-1979	Ford	F-100	Ranger Lariat
1977-1979	Ford	F-100	Ranger XLT
1977	Ford	F-100	XLT
1977-1978	Ford	F-150	Base
1977-1981	Ford	F-150	Custom
1977-1978	Ford	F-150	Northland
1977-1981	Ford	F-150	Ranger
1978-1981	Ford	F-150	Ranger Lariat
1977-1981	Ford	F-150	Ranger XLT
1977	Ford	F-150	XLT
1977-1978	Ford	F-250	Base
1977-1981	Ford	F-250	Custom
1977-1978	Ford	F-250	Northland
1977-1981	Ford	F-250	Ranger
1978-1981	Ford	F-250	Ranger Lariat
1977-1981	Ford	F-250	Ranger XLT
1977	Ford	F-250	XLT
1977-1978	Ford	F-350	Base
1977-1981	Ford	F-350	Custom
1977-1978	Ford	F-350	Northland
1977-1981	Ford	F-350	Ranger
1978-1981	Ford	F-350	Ranger Lariat
1977-1981	Ford	F-350	Ranger XLT
1977	Ford	F-350	XLT
1969-1970	Ford	Fairlane	500
1969	Ford	Fairlane	Base
1970	Ford	Falcon	Base
1970	Ford	Falcon	Futura
1969-1974	Ford	Galaxie 500	Base
1969-1970	Ford	Galaxie 500	XL
1972-1976	Ford	Gran Torino	Base
1973-1976	Ford	Gran Torino	Brougham
1974-1975	Ford	Gran Torino	Elite
1972-1975	Ford	Gran Torino	Sport
1972-1976	Ford	Gran Torino	Squire
1969-1978	Ford	LTD	Base
1970-1976	Ford	LTD	Brougham
1975-1978,1985-1986	Ford	LTD	Country Squire
1986	Ford	LTD	Country Squire LX
1985-1986	Ford	LTD	Crown Victoria
1986	Ford	LTD	Crown Victoria LX
1975-1978	Ford	LTD	Landau
1977-1979	Ford	LTD II	Base
1977-1978	Ford	LTD II	Brougham
1979	Ford	LTD II	Landau
1977-1979	Ford	LTD II	S
1977	Ford	LTD II	Squire
1969-1973	Ford	Mustang	Base
1971-1972	Ford	Mustang	Boss 351
1970-1973	Ford	Mustang	Grande
1970-1973	Ford	Mustang	Mach 1
1970	Ford	Mustang	Shelby GT-350
1969-1974	Ford	Ranch Wagon	Base
1970	Ford	Ranch Wagon	Police Cruiser
1969-1979	Ford	Ranchero	500
1969-1971	Ford	Ranchero	Base
1969-1979	Ford	Ranchero	GT
1970-1979	Ford	Ranchero	Squire
1972,1977-1979	Ford	Thunderbird	Base
1978	Ford	Thunderbird	Diamond Jubilee
1979	Ford	Thunderbird	Heritage
1978-1979	Ford	Thunderbird	Town Landau
1971	Ford	Torino	500
1970-1976	Ford	Torino	Base
1970-1971	Ford	Torino	Brougham
1971	Ford	Torino	Cobra
1970-1971	Ford	Torino	GT
1970-1971	Ford	Torino	Squire
1977-1979	Lincoln	Continental	Base
1977-1979	Lincoln	Mark V	Base
1970-1974	Mercury	Colony Park	Base
1969	Mercury	Comet	Base
1970-1973,1977-1979	Mercury	Cougar	Base
1977	Mercury	Cougar	Brougham
1977	Mercury	Cougar	Villager
1970-1979	Mercury	Cougar	XR-7
1969-1971	Mercury	Cyclone	Base
1970-1971	Mercury	Cyclone	GT
1970-1971	Mercury	Cyclone	Spoiler
1975-1978,1980,1986	Mercury	Grand Marquis	Base
1980	Mercury	Grand Marquis	Colony Park
1986	Mercury	Grand Marquis	LS
1970-1978,1980	Mercury	Marquis	Base
1970-1978,1980	Mercury	Marquis	Brougham
1975-1976	Mercury	Marquis	Colony Park
1969-1976	Mercury	Montego	Base
1975	Mercury	Montego	Brougham
1972-1973	Mercury	Montego	GT
1969-1976	Mercury	Montego	MX
1970-1974,1976	Mercury	Montego	MX Brougham
1976	Mercury	Montego	MX Villager
1970-1975	Mercury	Montego	Villager
1970-1974	Mercury	Monterey	Base
1970-1974	Mercury	Monterey	Custom