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1979 Ford F 150 Front Passenger Three Quarter

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Once back together we did a short gear break-in before hitting the dirt. The break-in consisted of easy driving for 30 minutes to an hour to get the gears warm and then let it all cool. We instantly noticed better off-the-line response from the lower gears, but also noticed the engine revving higher at highway speeds, as it needed to spin faster rpm to maintain the desired speed. Our speedometer that used to be 7 mph slow was now 10 mph fast when compared to GPS numbers. Fixing this will require a transfer case speedo gear swap.