The Pontiac hobby as well as America’s automotive heritage lost one of its greatest engineers when noted Pontiac engine designer Malcolm “Mac” McKellar passed away on April 9, 2011. Mac was the lead engineer and driving force behind Pontiac’s highly successful Super Duty racing program, which put Pontiac on the performance chart, where it quickly rose to the top. Besides Mac’s astute engineering of Pontiac engines and camshaft designs, he will long be remembered among Pontiac aficionados for the one-off overhead-camshaft 421-cu.in. V-8 that he built and fitted to his 1963 Grand Prix. However, Mac’s creation of the OHC Sprint-6 engine was perhaps his biggest legacy.
