What transmission is casting number 8663549?

The casting number 8663549 typically refers to a GM Turbo 350 automatic transmission. This transmission was commonly used in various Chevrolet, Pontiac, Oldsmobile, and Buick vehicles from the late 1960s through the early 1980s. It is known for its lightweight design and durability, making it a popular choice for both regular use and performance applications. Always verify with a reliable source or transmission expert for specific applications and compatibility.