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Shaker scoop

Article Discussion
File:Boss302engine.jpg
A Ford Boss 302 engine with the optional factory shaker scoop

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.

DesignEdit

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.<ref name=CT-shaker>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> However, because engines draw air in hundreds of cubic feet per minute, scoops do not raise intake pressures significantly.<ref name=AW-shaker>Template:Cite news</ref> 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.<ref name=CT-shaker/>

OriginsEdit

File:1967-pontiac-firebird-sprint-turismo-front.png
Pontiac Firebird Sprint Turismo prototype, with visible shaker hood scoop

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.<ref name=HR-Pontiac>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>. With the project directed by John DeLorean, the PFST inadvertently harbored the first major use of the shaker hood, entirely out of necessity. Due to the length of a straight-6, multiple carburetors 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 attributes the PFST's featuring in an issue of MotorTrend with Ford getting the idea to put the shaker hood to production.<ref name=HR-Pontiac/>

Factory-installedEdit

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;<ref>Template:Cite news</ref> 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 (1970Template:Frac Firebird Trans Am, which used a backwards-facing scoop to draw air from the high-pressure area at the base of the windshield).<ref name=Hemmings18>Template:Cite news</ref> Some official Chrysler literature referred to this popular hood style as the "Incredible Quivering Exposed Cold Air Grabber".<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> 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<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> and 2014 Dodge Challenger ("Shaker" and "Mopar" models).<ref name="AW-shaker" /><ref>Template:Cite news</ref> The 2003–04 Mustang Mach 1 was equipped with a model-specific 32-valve 4.6 L V-8 engine,<ref>Template:Cite news</ref> to fill the performance gap between the less-powerful Mustang GT and the flagship Mustang SVT Cobra.<ref>Template:Cite news</ref> For the 2014 model year, Dodge announced the shaker scoop Challengers as limited-production models at the SEMA show in November 2013;<ref>Template:Cite press release</ref> shaker scoop availability was extended in 2015.<ref>Template:Cite news</ref> The shaker package was available through the 2023 model year,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> when the Challenger was discontinued.<ref>Template:Cite news</ref>

ExamplesEdit

Cars available with factory-installed shaker scoops included:

ReferencesEdit

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