How the Right 700R4 Torque Converter Transforms Performance
If you’ve ever finished a round of engine upgrades: camshaft, intake, headers, maybe even EFI, and then felt underwhelmed the first time you left a...
Essential 6L90 Transmission Upgrades
If there’s one thing GM got right with the 6L90 transmission, it’s that they built it to survive real work. Found behind heavy-duty trucks, performance...
4R70W Transmission Controller Explained
This guide explains the 4R70W transmission controller, the electronic brain that commands shifts and lockup. Learn why factory computer control fails for...
4L80E Direct Drum in Performance Rebuilds
In the hierarchy of critical components inside a 4L80E, the direct drum rarely gets the attention it deserves. Builders often focus on shafts,...
What Is a Billet Direct Drum? Strength, Design, and Why It Matters
If there were a popularity contest in the world of transmission components, the direct drum might not even get an invite. Most people don’t know it...
Valve Body Basics: What Does a Valve Body Do in a Transmission?
Few things are more frustrating than a built transmission that doesn’t respond the way it should. That frustration leads many gearheads to ask: What does...