Swapping out the 10 speed in my FLD for a 13. Glad I'm doing it now, found quite a few vibration makers. Rear engine mounts, carrier bearing.
Going to have to swap the driveshaft for a shorter one. Anyone know offhand how much shorter the 13 speed driveshaft needs to be from the 10?
Driveshaft length - 10 to 13 speed swap
Discussion in 'Freightliner Forum' started by W Bench Farms, Dec 28, 2021.
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Measure the difference in length between the 2 transmissions. Then just take the old shaft in to a driveline shop and have them shorten it up.
msh, Roger McG, Mike250rs and 1 other person Thank this. -
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JoeyJunk Thanks this.
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The best thing to do is get the new trans bolted in and everything set and sitting normal including the suspension and then do the measurements. This way you will get the absolute best custom length to the combo and not just a ballpark.
Every truck combo is a little different. There are 100’s of different yoke dimensions and different and odd rear collar/bearing retainer sizes too. Not every combo is uniform across the trans. models/series either. Example. I’ve got two old RTO12513’s. Both out of ‘74 Petes. Same identical “book end” and wheel base trucks. Both trans side by side look identical but one is 2-3/4 inches shorter and the yoke is a 1/2” deeper. Making swapping shafts without possible vibes questionable.broadsword, Roger McG, Mike250rs and 2 others Thank this. -
Best advice your gonna get all day @SmallPackage.
broadsword and Oxbow Thank this.
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