FULL BILLET

Tuning, turbo, and injection system technology has come a long way for the 7.3L Power Stroke in recent years. The amount of horsepower that can be gleaned from Navistar’s dinosaur V8 is…

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INSIDE DIESELSITE’S LEGENDARY 4R100 Unlike the 5R110 TorqShift found in the trucks that superseded theirs, ’99-03 Super Duty owners don’t have the luxury…

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 installing that beefed-up…

Keeping your 7.3l 4R100 Transmission Cool

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 not age; it’s excessive…

One Tough Tranny: A Mid-Level Ford Transmission Rebuild

However, like any high-mile automatic transmission, your 4R100 is sure to have some wear that should be addressed before you pump more power through it. Though it’s a good transmission, the…