35 spline chromoly shaft upgrade day.
Old on the left. New on the right
1.25” old diameter
1.45” new diameter
Measure with my dial calipers.
The Yukon shaft measured about 1/4" longer than factory. I think this is just Yukon's way to make everyone with a Ford upgrade to their hubs. I had the hubs so it wasn't a problem, but without them I'd not only have 35 spline outers with 30 spline locking hubs, it would sit too far outside the hub for everything to go back together. The spiral snap ring Yukon uses is pretty sweet. I think it's a full 2 rotations of the axle shaft vs a C clip. It seemed to go on better.
New Spicer non gRemoving the old stub shaft was fun. Rust and age are a GREAT combination. New Spicer u joint and it slid right in. The Yukon hub selector has an O ring in it. There isn't a great photo (read: ANY) of this disassembled in the manual. Once you instal them and test it out not only is it stiff, but it sounds "like there is a goos inside your hub" according to
Add. It still makes me laugh thinking about it. So I took them off, popped them apart, snapped a photo and put them all together. So now I have a rebuilt Kingpin 60 with chromoly 35 spline outers, Stage 8 spindle nuts, and Yukon locking hubs. Pretty bitchin setup...on paper.
I also upgrade to Stage 8 lock nuts after seeing videos or hearing a recent story of a wheeler who had their hub nuts come unlocked. Stage 8 locking spindle nuts are BAD...ASS. Kind of tricky for a newb like me to figure out how they go in without assistance (instructions and YouTube) BUT once you do it a few three times you'll understand how it all locks together.