Th400 vs 4L80E Differences

Clearly, the biggest difference between the TH400 vs 4L80E is the 4L80E’s overdrive gear. Although they come from different eras, there is quite a bit that these two transmissions have in common.  The mere fact that people are so interested in this topic is a testament to the absolute bulletproof reputation of the TH400.  There … Read more

TH350 vs. TH400

One of the largest questions amongst Chevy guys is TH350 vs. TH400.  Which one is better.  Even though they have been out of production for decades, there is still a strong demand for them.  Their simplicity and durability make them attractive to people in the LS swap community.  They are certainly are both great transmissions. … Read more