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AOD 4spd Automatic Trans Swap

The AOD is one of the most popular trans swaps for Early Broncos. You get the higher top gear and a lock-up converter. Thanks to the huge Mustang aftermarket, all of the basic ills of the trans have been solved and you can really build a nice reliable unit if you plan on beating on it.

Web Pages Featuring AOD 4spd Automatic Trans Swap
  AODE (4-speed lock up automatic) Swap into EB  Pictures
The following describes the steps required to install a late model AODE type transmission into an early model Ford Bronco. This transmission replaced the original 3 speed manual transmission.
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Calc Your Cruising RPM
A chart and formulas to help you figure out your highway RPM with different trans and tire combos.
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Matt's Gear Ratio, speed, and RPM finder
A cruise RPM calculator. "Given any 5 of the 6 fields, this DiffGear will compute the remaining one. Overall Gear ratio is automatically computed for all fields."
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