Dale Amy
July 16, 2010

Tech | Transmission Upgrade

You don’t have to have the mathematical skills of Einstein to grasp the obvious advantages of a six-speed gearbox over any old-school three- or four-speed box.
With a deep overdrive in Sixth gear, those manly 3.91 or 4.11 axle ratios in your classic muscle-bound Ford will effectively be whittled down to a far more highway-friendly size for economical, low-wear touring.
Meanwhile, on the way up, you’ve got a half-dozen nicely spaced gear ratios to assist in the engine’s accelerative efforts.

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