The internal combustion engine is, in essence, an air pump. It pulls air in, mixes it with fuel, hits it with a spark, and kaboom – we have motivation. Heat works against this process though, so anything that can be done to cool the air going into the motor benefits performance. Think of hood scoops as the original cold air intake, shoving outside air directly into the motor rather than forcing it to travel through a hot engine bay to reach its destination.

During the heyday of the muscle car craze of the late 1960s and early 70s, manufacturers brought a number of different hood scoop designs to market, from the non-functional types found on early Pontiac GTOs to vacuum-operated scoops like the Air Grabber on the Plymouth Road Runner and GTX and the cowl induction systems used on models like the Chevrolet Chevelle. All of them had their merits, be it aesthetic, performance, or both – but none of them had the outright cool factor of the Shaker hood scoop.

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RustyMuscle from the Chrysler blue prints I have seen on the Shaker assembly for the Plymouth and Dodge Shaker Hoods and engine assembies is that Chrysler might of been the first to be working on the Shaker. The E Bodies did not come out till August of 1969 but the Hoods were already done and some of the blue print dates are a lot earlier than the first production dates of regular production E Bodies in August 1969. Pilot E Bodies were built and E Body Brochure pictures were taken much earlier and parts book illustrations were done much earlier than August 1,1969 and test fitting would of proceeded all of these times by quite some time. This would make the start of the Shaker Assembly engineering much much earlier than all or the above.

Most definitely! That's fantastic information, and very enlightening.