TIL – In the Trans-Am sports car racing series, from 1967-69, Roger Penske had their Camaro’s dipped in acid to reduce the weight of the steel body. There is controversy about whether or not they cheated on the min. weight limits by having a normal car inspected but racing an acid-dipped car

Read more: https://www.caranddriver.com/reviews/a15141796/the-lightweight-camaro-1967-donohue-trans-am-camaro-archived-test-review/

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  1. Kind of like when Smokey Yunick moved the body of his ’66 Chevelle back 2 inches on the frame, give it better weight distribution and aerodynamics (supposedly).

  2. Quote from the article:

    The first of the famous unfair-advantage Penske/Donohue creations was the 1967 Camaro you see here. At the end of the ’67 SCCA Trans-Am season, after Donohue had piloted it to victories at Las Vegas and Seattle, SCCA tech inspectors discovered that most of this Camaro’s metal bits and all of its body panels were acid-dipped—an ethically questionable process carried out at Lockheed Aerospace in California. This acid bath reduced the Camaro’s weight from the stock 2920 pounds to an Oprah Slim-Fast 2550 pounds.

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