I "think" that my A833 trans has a 2.66 first gear but I need to get the book out and verify that before I make a move. That would put me at (2.66 x 3.55) 9.4:1 currently If I'm reading you right, which is considerably short of the 11:1 for aluminum. Even more reason to stay with one of the steel ones. I also have an A833OD trans on hand and I thought those had a steeper first gear. I acquired it with the thought that it would be a cheap alternative to a Gear Vendor or TKX to get an OD for longer road trips and around town driving. I had a 77 Aspen RT forty years ago with the 318/A833OD combo and it seemed to drive pretty well even though it was a pooch.