What is the difference between a 727 and 904 transmission?

The 727 and 904 transmissions are both automatic transmissions produced by Chrysler, but they differ in design and application. The 727 is a heavier-duty transmission, typically used in larger vehicles and capable of handling more torque, making it suitable for trucks and performance applications. In contrast, the 904 is lighter and designed for smaller, more fuel-efficient vehicles, featuring a simpler construction and lower torque capacity. Additionally, the 727 has a more complex fluid path and is often seen in higher-performance or heavy-duty contexts.