it looks like we are going to have to wait to upgrade to a newer MH so I would like to upgrade the Turbo Hydramatic 400 to the 700R trans. Has anyone done this here? Seems at 65 mph its topped out, so...
I had to have two 700R4's rebuilt in 100,000 miles in a 1989 1500 Silverado and I am a conservative driver. First one slipped, second one quit coming down an interstate ramp. (planetary gear broke) Yours is a tough call. Not sure why you are going so slow? I had a 1983 Winne 454 and had it up to 85mph getting away from a trucker that kept passing then slowing down on hills.