don`t waste the time doing just a converter. Because a new triple disc will be tight and not slip, the next weakest link is the direct clutches which will take the slip and eventually burn up. When those burn up, the material will trash your converter. Do it once, right.
And yes-1600 is awesome for everything. it helps most in stoplight to stoplight. Your truck will actually feel more powerful because it is transmitting what power you do have, to the ground better.
This. I love my RCD 1600 stall. No more blowing through the converter even on mild tunes.
But 37s and stock gearing will not be fun with minimal mods. I ran some 35s for a while when I drove on ****ty offroad surfaces with stock 3.73:1 and truck was noticeably slower, this will be even worse with 37s.
You are not only battling height but rotational mass. I think the Nitto 35 MTs I was running were about 80lbs/ea versus around 50lbs for the stock Goodyears I had when purchased new. This is only counting the tires, I did not change the wheels.
I went back to stock height tires as I do not drive in that crap anymore, truck felt like it picked up a nice bump in power as it was able to put the power down so much easier. Also my fuel economy came back.
So, that being said... I would regear first if you plan to keep 37s. I would probably do 4.56:1 gears, that would put you right around 2000rpm @ 70mph assuming 0.71:1 for OD in the 5R1110W
Replace that junk Traclock while you have it apart.
