Originally Posted by LONGBOX55
I mentioned an adapter for a T-case in the event that an integrated 'case was to be used instead of the factory style divorced. A T5, Richmond, or Tremec would be way too light for off road use, gearing isn't low enough. The NV4500, NV560, or ZF S6-650 would be a much better choice. Other considerations would be to check into Clark or Fuller 5/6 speeds used in 1 1/2 and 2 tons. I have seen those (with and without and overdrive) in the standard GM bellhousing pattern in addition to the SEA #2 pattern.

"the ultimate answer is what you are going to do to the truck after it is together"
there are different ratio's available in the lighter trans. mine has the 3.7 first. I doubt if I'll get into a position that I will need any more. with my previous setup I doubt if I eever used that 7:1 1st gear. one of the times was when I had to start the truck to start up a hill when i got stuck at a red light. the clutch linkage was broken so I had to start off the starter. the other times when I needed it to lift from a start as I was grossing out over 16,000lbs with a trailer on and I only had 122 hp
ron