Drive shaft too short

85C10Draven · Dec 5, 2024

Hi, I am having an issue with my truck. Took it to the shop, found out the drive shaft is too short. Yoke is not completely setting. Transmission had some work done to it a little bit ago, but what I was wondering was if I installed a 2/4 inch lowering kit from bell tech if it would let the yoke sit properly. I’m ready to purchase this lowering kit, I mean I am gonna lower it no matter what but I’m including pictures of how the yoke looks right now and how my truck sits. Needing some answers, just replaced the old yoke because the way it is sitting if I drive it, it is scoring the yoke itself. Wanting to know if 4” inch lowering kit the back and 2” in the front will be enough to make it sit right ?

Tonimus · Dec 5, 2024

Welcome to the group. If you're going to do the lowering kit anyway, just do it and see where you're at. It's hard to tell exactly where the slip yoke will end up after the kit. It'll come forward a little, but likely not as much as you hope.

Scott91370 · Dec 6, 2024

When I lowered mine (flip kit) I ended up shortening my drive shaft 3/4". I would definitely lower it first then adjust the DS to fit.

85C10Draven · Dec 6, 2024

Scott91370 said:
When I lowered mine (flip kit) I ended up shortening my drive shaft 3/4". I would definitely lower it first then adjust the DS to fit.

If you don’t mind me asking, what are the exact specs on your lowering system? Front and back. Curious, asking around what everyone is running.

Scott91370 · Dec 11, 2024

85C10Draven said:
If you don’t mind me asking, what are the exact specs on your lowering system? Front and back. Curious, asking around what everyone is running.

Front is 2.5" spindles and 1.5" springs.
Rear is an axle flip kit only. No C notch or shackle extenders. I've heard that the flip kit can be between 5-6 inches but I did not measure.

Bextreme04 · Dec 11, 2024

85C10Draven said:
Hi, I am having an issue with my truck. Took it to the shop, found out the drive shaft is too short. Yoke is not completely setting. Transmission had some work done to it a little bit ago, but what I was wondering was if I installed a 2/4 inch lowering kit from bell tech if it would let the yoke sit properly. I’m ready to purchase this lowering kit, I mean I am gonna lower it no matter what but I’m including pictures of how the yoke looks right now and how my truck sits. Needing some answers, just replaced the old yoke because the way it is sitting if I drive it, it is scoring the yoke itself. Wanting to know if 4” inch lowering kit the back and 2” in the front will be enough to make it sit right ?

It's impossible to tell from your pics if it is even short. You should be able to unhook the driveshaft from the axle and then bottom out the yoke in the trans. make a mark on the yoke where it sits on the seal when bottomed out, then pull the yoke out enough to reconnect it. You should have 3/4"-1" of pull-out at ride height. If you know the overall driveshaft length and the angle of the driveshaft compared to the angle of the bed, you can figure out exactly how much more the yoke will go in with a lowering kit with some math.

Drive shaft too short

85C10Draven

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