1968 1970 Chevrolet Corvettes
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e are including this factory photo of the coveted ZL1 aluminum 427 race engine as two were installed in '69 Corvette Engineering mules for testing at GM's Milford, Michigan, Proving Grounds. Years later, two popped up for sale but in different colors. According to Chevy's Vince Piggins, no '69 ZL1 427 Corvettes were ever officially sold. View Related Article
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