Originally Posted by
GMPX
8 Speed, 9 Speed, sounds like engineers playing mine is bigger than yours. I'm with Joe on this one, a decent sized engine (or that LF3 thing) will make plenty of torque everywhere, they don't need shifts happening all over the place, I bet Cadillac only stuck that trans in for the European market. I'm just thinking back to my old LS1 with a 4 speed and even that never felt like it was struggling no matter what gear because of the torque. Whereas an LFW 3.0L with a 6L60E is all over the place because the engine has no torque. I know of a shop out here who just completed a 4L80E swap in place of a 6L80E for a car that sees a lot of dragstrip action.
I believe this 8 speed auto not a GM design, it's by Aisin.