[mikev]

Originally Posted by piecesparts

Years ago, I put a 700 R4 in my 84 GMC SWB truck. To this day, I am not sorry---the only thing that I would do to upgrade from this would be a six speed manual tranny, but that is actually too pricey, now. I have a fully built 700 with a 2400 stall converter, to support the cam that I have in my stroker engine. The tranny has the heavy duty planetary and sun clutch setup, heavy duty clutches, the upgrade valve body and hardened seperator plates in it. I run down the highway at 2200 to 2500, depending on what my cruising speed is. My rear end gears are 3.73 and my tire size is at 28.5" tall, so I have a little more RPMs than some people would have. I get around 15 MPG from a 400+ HP engine and tranny combination and it can perform with the pony cars surprisingly well. I also have a shift kit from Transgo in the valve body, that was a noticeable change in the shift capabilities.

I want one of those for my 6.2. Hello, 25mpg!