Have had a fiasco switching my truck over from a 10 speed to 13. Salvage yard sent an 8LL instead of a 13. Been working with them close to 2 months to find another. They have an RTLOC16909A which should be a convertible 9 to 13. I see that there is a kit available for the swap. Anything else that I need to verify? What is actually in the kit? Already have the new shift knob. Don't want to go through these problems again. Just trying to find out everything I need to, and make sure it's what I need before they ship it.
RTLOC16909A info
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by W Bench Farms, Feb 16, 2022.
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Air line and a shifter knob is all you need. How in the world did they confuse a 8LL for a 13 speed?
Roger McG Thanks this. -
8LL didn't have a tag on it. I took their word for it, and didn't think to check anything else out. Hooked up air lines and H/L had air when in low range. -
Found this chart that should work.
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Someone else can verify. I didn't do transmission work at our shop (just everything else). My brother did all that but I know it was just lines and knob.
Roger McG Thanks this. -
You have to modify your driveshaft length as well. 13 speed is somewhere around 3 inches longer transmission if I remember correctly. FRO 10 speed is 29.93 inches RTLOC is 33.1
spsauerland Thanks this. -
Smellfunny Thanks this.
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I don't know what the conversion kit cost but it would be simpler to just buy a whole transmission and put it in I would think.
If it was their mistake they really should return it and make you whole. -
The 8LL can't be converted, so it has to come out.Dino soar Thanks this. -
You are correct, the RTOC is built the same as a 13speed but the air for the shifter is plumbed as a 9, add a 13speed shift knob and re-plumb it to a 13 and you are good to go. The one's that I have converted to 13's I had to do some work with the splitter to get it working after not being used for years.
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