The 4L80E is a TH400 with an electric overdrive. Can't CK remove the electronics with a manual valvebody? Why isn't this option being explored more? What would it take to install this trans in the Buick? The link is below for the people not familiar with what I am talking about. At that torque and hp rating it would cover 99% of us.
www.CKPerformance.com
The
www.CKPerformance.com
The