Stick with the 10 speed or go to a 13 speed?

Lol oh I'd get a lot of stories out of him. I think I could stomach some old Milwaukee again to hear some stories from an old timer. I don't know if I can stomach that crap cowboy cool though. Its hard enough to stomach ice cold.

 

I went with a 1850tq 13 rtlo when my 15 died couple months ago, havin 200 rpm in between gears vs 300-400 is worth it, easier to stay in the sweet spot, didnt get much for core but im alot happier with a 13, youd prob get more for a 10sp core than i did for a 15. Ive bumped my kitty up a couple ponies so the higher torque rating along with a new high tq easy pedal clutch been workin good

 

The RTLOXX913 is one very smooth, well thought out transmission. The ratios just seem perfectly spaced out to me. I like it far more than the last 18 I had.
You'll be very happy with one. These days all transmissions are the same length as well, so unless what you're replacing is ancient, you won't need to alter the driveshaft.

 

Most all your modern trannys, ones in the last ten years or so, most overdrive 10 speeds will range between .71 to .74 in the high gear, RTLO 13A's and RTLO 18B's have a high gear of around .72 or something....wanna reduce your rpms, switch your axle ratios to 3.55 and/or make sure your tire size is 11R24.5....I had a 97 KW, will tall 24s, B model 10 speed, 3.70 axle ratio and 1,500 rpms would get you 70 mph all day and I always got 5.85 to 6.15 mpg regularly....I know I seem a little late to conversation but I found this interesting as I love to read about and talk about tranny and rear end set ups.

 

Everything in the truck is exactly the same?
The difference between a mechanic and a parts change is a mechanic trusts nothing and measures and tests everything. It costs nothing to ask, nothing to measure. If you change it and find a truck with the same model and engine with the transmission you are putting in you can give the dealer the serial number of that truck to the dealer, and they can tell you.

Just a thought!