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Shaker scoop

From Wikipedia, the free encyclopedia

Shaker scoop
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A shaker scoop (sometimes called a shaker hood scoop or a shaker hood) is an automobile term for an air intake 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.

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A Ford Boss 302 engine with the optional factory shaker scoop
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Design

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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.[1] However, because engines draw air in hundreds of cubic feet per minute, scoops do not raise intake pressures significantly.[2] 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.[1]

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 Mustang equipped with the 428 Cobra Jet engine;[3] 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 (19701⁄2 Firebird Trans Am, which used a backwards-facing scoop to draw air from the high-pressure area at the base of the windshield).[4] Some official Chrysler literature referred to this popular hood style as the "Incredible Quivering Exposed Cold Air Grabber".[5] 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[6][7] and 2014 Dodge Challenger ("Shaker" and "Mopar" models).[2][8] The 2003–04 Mustang Mach 1 was equipped with a model-specific 32-valve 4.6 L V-8 engine,[9] to fill the performance gap between the less-powerful Mustang GT and the flagship Mustang SVT Cobra.[10] For the 2014 model year, Dodge announced the shaker scoop Challengers as limited-production models at the SEMA show in November 2013;[11] shaker scoop availability was extended in 2015.[12] The shaker package was available through the 2023 model year,[13] when the Challenger was discontinued.[14]

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Examples

Cars available with factory-installed shaker scoops included:

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References

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