A shaker scoop (sometimes called a shaker hood scoop or a shaker hood) is an

automobile A car, or an automobile, is a motor vehicle with wheels. Most definitions of cars state that they run primarily on roads, Car seat, seat one to eight people, have four wheels, and mainly transport private transport#Personal transport, peopl ...

term for an

air intake An intake (also inlet) is an opening, structure or system through which a fluid is admitted to a space or machine as a consequence of a pressure differential between the outside and the inside. The pressure difference may be generated on the ins ...

for combustion air that is mounted directly on top of the engine's air cleaner and protrudes through a hole in the hood. Since it is fastened directly to the engine, it moves with the engine's movement and vibration on its mountings, thus the 'shaker' name.

Design

Like all such scoops, its purpose is to increase performance by a ' ram air' effect, taking advantage of the vehicle's speed to deliver high pressure, cool air to the engine over a shorter, less restrictive flow path. However, because engines draw air in hundreds of cubic feet per minute, scoops do not raise intake pressures significantly. Additional claimed benefits of a shaker hood include elevation to prevent water from being drawn on flooded terrain, being a source of cooler, denser air, and having a more direct path to the engine's throttle plate.

Origins

1967-pontiac-firebird-sprint-turismo-front

The earliest major example of a shaker hood scoop was seen on the Pontiac Firebird Sprint Turismo prototype. The Pontiac Firebird Sprint Turismo, often referred to as the PFST for short, would eventually lead to the development of the Pontiac Firebird Trans Am.. With the project directed by

John DeLorean John Zachary DeLorean ( ; January 6, 1925 – March 19, 2005) was an American engineer, inventor, and executive in the U.S. automobile industry. He is widely known as founder of the DeLorean Motor Company, as well as for his work at General Motor ...

, the PFST inadvertently harbored the first major use of the shaker hood, entirely out of necessity. Due to the length of a

straight-6 A straight-six engine (also referred to as an inline-six engine; abbreviated I6 or L6) is a piston engine with six cylinders arranged in a straight line along the crankshaft. A straight-six engine has perfect primary and secondary engine balanc ...

, multiple

carburetors A carburetor (also spelled carburettor or carburetter) is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the Vent ...

are required to evenly distribute fuel and air, of which the PFST would opt for a triple-carb setup. A large, steel air cleaner was installed on top of the setup. However, the air cleaner didn't fit under the hood of the Pontiac, so the engineers would turn to cutting a hole, fully exposing the air cleaner. An article on

Hot Rod Hot rods are typically American cars that might be old, classic, or modern and that have been rebuilt or modified with large engines optimized for speed and acceleration. One definition is: "a car that's been stripped down, souped up and ma ...

attributes the PFST's featuring in an issue of

MotorTrend ''Motor Trend'' is an American automobile magazine. It first appeared in September 1949, and designated the first Car of the Year, also in 1949. Petersen Publishing Company in Los Angeles published ''Motor Trend'' until 1998, when it was sold ...

with Ford getting the idea to put the shaker hood to production.

Factory-installed

Larry Shinoda of Ford is credited with introducing the shaker hood scoop as a factory-fitted option and campaigning to make it functional, first available exclusively for the 1969

model year The model year (sometimes abbreviated as MY) is a method of describing the version of a product which has been produced over multiple years. The model year may or may not be the same as the calendar year in which the product was manufactured. ...

Mustang The mustang is a free-roaming horse of the Western United States, descended from horses brought to the Americas by the Spanish conquistadors. Mustangs are often referred to as wild horses, but because they are descended from once-domesticate ...

equipped with the 428 Cobra Jet engine; the option was expanded to other Ford Mustang engines for 1970 and imitated quickly by competitors Chrysler (1970 Plymouth 'cuda and Dodge Challenger) and Pontiac (1970 Firebird Trans Am, which used a backwards-facing scoop to draw air from the high-pressure area at the base of the windshield). Some official

Chrysler FCA US, LLC, Trade name, doing business as Stellantis North America and known historically as Chrysler ( ), is one of the "Big Three (automobile manufacturers), Big Three" automobile manufacturers in the United States, headquartered in Auburn H ...

literature referred to this popular hood style as the "Incredible Quivering Exposed Cold Air Grabber". This lengthy title has since been shortened by enthusiasts and collectors to the less tongue-twisting "shaker hood". In the 2000s, factory-fitted shaker scoops were reintroduced with the 2003 Ford Mustang Mach 1 and 2014 Dodge Challenger ("Shaker" and "Mopar" models). The 2003–04 Mustang Mach 1 was equipped with a model-specific 32-valve 4.6 L V-8 engine, to fill the performance gap between the less-powerful Mustang GT and the flagship Mustang SVT Cobra. For the 2014 model year, Dodge announced the shaker scoop Challengers as limited-production models at the

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show in November 2013; shaker scoop availability was extended in 2015. The shaker package was available through the 2023 model year, when the Challenger was discontinued.

Examples

File:1971 Plymouth Cuda 440-6 Hardtop (24452748914).jpg, 1971 'cuda with 440 6-BBL and shaker scoop File:CudaShaker6pack.jpg, alt=1970 Dodge 440 Six Pack Shaker Scoop, 440 Six Pack Shaker Scoop in factory Argent Silver File:429Shaker.jpg, alt=429 Super Cobra Jet 1970 Torino Shaker Scoop and Intake, Shaker Scoop and Intake on 1970

Ford Torino The Ford Torino is an automobile that was produced by Ford Motor Company, Ford for the North American market between 1968 and 1976. It was a competitor in the mid-size car, intermediate market segment and essentially a twin to the Mercury Monte ...

with 429 Super Cobra Jet engine File:1969 Ford Mustang Mach 1 428CJ (22865677869).jpg, 1969 Ford Mustang Mach 1 428 CJ File:1970 Ford Mustang Boss 302 (14376335324).jpg, 1970 Boss 302 Mustang File:'70 Plymouth Barracuda Hemi (Auto classique).JPG, 1970 Plymouth 'cuda File:1970 Dodge Challenger RT (14922593932).jpg, 1970 Dodge Challenger File:1970 Ford Torino GT (27755459004).jpg, 1970 Ford Torino GT File:1970 Pontiac Firebird Transam (17736059759).jpg, 1970 Pontiac Firebird Trans Am File:1971 Ford XY Falcon GTHO Phase 3 Sedan (9956968536).jpg, 1971 Ford Falcon XY GTHO Phase III File:1974 Pontiac Ventura with GTO option - factory original condition 2of6.jpg, 1974 Pontiac Ventura (GTO) File:1977 Pontiac Can Am with TA 6.6 at 2015 Macungie show 1of3.jpg, 1977 Pontiac Can Am File:2003 Ford Mustang Mach 1 Coupe (14370242858).jpg, 2003 Ford Mustang Mach 1 File:2020 Dodge Challenger RT 50th Anniversary Edition (cropped).jpg, 2020 Dodge Challenger R/T 5 Cars available with factory-installed shaker scoops included: * 1969 Ford Mustang Cobra Jet * 1970 Boss 302 Mustang * 1970 Plymouth Barracuda * Dodge Challenger *

* Pontiac GTO *

Pontiac Firebird The Pontiac Firebird is an American automobile built and produced by Pontiac (automobile), Pontiac from the 1967 to 2002 model years. Designed as a pony car to compete with the Ford Mustang, it was introduced on February 23, 1967, five months a ...

Trans Am * Pontiac Can Am Grand Am * Ford Falcon XY GT Phase III * 2004 Ford Mustang Mach 1

References

{{DEFAULTSORT:Shaker Scoop Automotive accessories Automotive styling features