Buying & Comparison Guides
Is a 4L65E Stronger Than a 4L60E?
Wondering if the 4L65E transmission is stronger than the 4L60E? In short, yes. The 4L65E is an upgraded, heavy-duty 4L60E introduced initially for trucks, and...
How Much Horsepower Can a 700R4 Transmission Handle?
A stock 700R4 in good condition handles about 350 lb-ft of torque and roughly 300 to 350 horsepower. GM rated it to move a vehicle up to a 6,000 pound...
TH400 vs 4L80E vs 6L80E: Which GM Heavy Duty Automatic Belongs Behind Your Build?
All three of these will hold serious power. The question is not which one is strongest, it is which one matches the car you are actually building. If you...
Are 4L60E and 4L65E Interchangeable? Understanding the Differences and Compatibility
Physically, yes. The 4L60E and 4L65E share the same case, the same bellhousing bolt pattern, the same mount location, the same tailhousing, the same cooler line...
TH350 vs. TH400 Performance: Which Transmission Offers Better Power and Reliability?
The TH400 holds more power. The TH350 is lighter and shorter. That is the whole comparison in two sentences, and everything else is about matching one of...
What is the Difference Between a 4L70-E and a 4L75E? Key Variations Explained
The 4L70-E and 4L75-E transmissions are both upgrades of the 4L60 series, but they differ in strength and design features. The 4L70-E includes an added...