Mach 1 vs. GTO
The '04 Mach 1 is powered by a 310 hp (308 with an automatic) 4.6-liter DOHC V-8 that likes to be revved. The 3.55 rear gear is nice, but the Mach would benefit greatly from a change to 4.10 or 4.30s. The swap could be worth two or three tenths in the quarter. View Related Article
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