FULL BILLET
Inside Dorsey Diesel’s Stage 4 4R100
Tuning, turbo, and injection system technology has come a long way for the 7.3L Power Stroke in recent years. The amount o...
4r100
ENGINEERED TO LAST
INSIDE DIESELSITE’S LEGENDARY 4R100
Unlike the 5R110 TorqShift found in the trucks that superseded theirs, ’99-03 Super Duty owners don’t have the luxury of th...
Installing our Better than New 4R100
In our last issue, we had Remac Transmissions, in San Dimas, California, go through a Ford 4R100 auto trans to make it better than new. This time, we will be i...
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Ford 7.3L Trans Cooler Upgrade
A transmission is not something that most truck owners think about… until one fails, that is. The most common cause of failure in an automatic transmission is n...