![]() Without the Gear Vendors, top speed for grabbing an automatic kickdown had been about 65 mph. Stabbing the throttle at speed, we got something we didn't expect, as the tranny kicked down to Second Over, and the Charger rocketed up to well over triple digits before shifting to Third Over. Remember, with the overall higher gearing effect of the overdrive in action, the run from 3,200-4,000 rpm is worth a 28 percent higher mph gain than with the direct drive ratio at work. This is just where it needed to be to work efficiently with our torque converter, yet leaving plenty of revs available should the need arise. RPM at a high speed cruise was down from 4,000, to just under 3,200 at 85 mph, and about 2,700 at 70 mph-perfect. Once on the open highway, in automatic mode, the overdrive is already on by the time you reach freeway speeds.
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