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How quickly can you swap an engine? Car Craft magazine sponsored the Engine Swap Challenge and pitted Justin Dermody’s ’70 Cutlass against Corey Ritter’s ’69 Camaro in an all-out battle against each other and the clock. The rules were simple: Swap in the supplied LS engine first, get it running, and win! Holley estimated it would take two hours, but Dermody’s crew completed the swap in a blistering 31 minutes and 57 seconds and took home the LS engine, too.