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  1. PDOGG74

    How Strong And How Long Does The Engines Last For Mach1

    Hello, I read the last thread of the 4.6 2v but what about the 4.6 4v. As we all know the engines that were made for the regular GT, Mach1 and Cobra is all made different. From what I know and please correct me if I am wrong the GT engines; were made of cast iron and are 2v, the Mach1 engines...