Brandon Furches is known for building very powerful LS4 V8s. He’s able to put the LS4’s power to the ground thanks to a 4T80E automatic transmission. Brandon released a detailed guide to answer many of the questions he receives about the combination. In the video he covers the specs of the 4T80E transmission and the steps on using with a LS4 V8. Then he covers how to swap the combo in a W-body using his mounts. There are links to parts in the video description.