Buying & Comparison Guides
Which is better, 200R4 or 700R4?
The 200R4 vs 700R4 debate has been going on for decades, and for good reason. Both transmissions became popular during the rise of overdrive performance...
6L80 Transmission 4x4 vs 6L80 Transmission 2WD: What’s The Difference
If you've spent any time planning a late-model GM swap or sourcing a replacement unit for a truck build, you've probably run into the 6L80 pretty...
Automatic Transmission vs Manual: What You Need to Know for Performance Builds
When building a performance car, restoring a classic, or assembling a street/strip machine, one of the first decisions you must make is whether to choose...
How to Choose the Right Level AOD Transmission for Your Ford
Choosing the right AOD transmission for your Ford isn't just about horsepower. It's about how you drive, what your car can handle, and what you expect from...
6L80 vs 6L90: Devil's in the Details
The 6L80 and 6L90 are two of the most popular rear-wheel transmissions from General Motors. So many things have been discussed about these remarkable...
Ford C4 and C6 Transmissions: What Are the Differences?
Ford's C4 and C6 3 speed automatic transmissions are similar in operational characteristics; however, there are still unique differences between the C4 and...
Transmission Accomplished - Four options to increase the capacity of a Pontiac Turbo 400
In the early days of the automotive industry, manual-shift transmissions were the norm. Operating a clutch pedal and a shift lever peering up from the...