Broke mine at the pulls last night. Took the ears right off the yoke. All that's left is the nut and the part inside the diff. Looking for something with a 1480 joint and u bolt style straps.


Pics to come

 

I was wondering if they made something like this for my duri but this was the best I found still uses straps however...
not even sure if this would work on the gasser rear end

11.5" Pinion Yoke - 1480 Series U Joint

I have a U bolt style yoke for my jeep and still managed to break it...

 

I know this is from June but holy smokes, what kind of power are you putting down to break that at the track?

 

the 11.5 aam in the duramax and 8.1l are exactly the same.. the 6.0's up to a certain year only had 10.5 aam

 

I dont know what year HD I saw the other day but it was fairly new (10 or 11 maybe) and it most definitely had the 14 bolt in it. There is no need for the 6.0 gas trucks to have the 11.5. You can easily tell the difference between the two because the 14's dont have the gussets (lack of better term) that run from the tube to the housing, on top and bottom.

Did the 8.1's even have the 11.5 am? I thought they had 14's in them too but I could be totally wrong.

 

Mine is the 14ff 10.5.

As for power

efi tune
long tube headers magnaflow exhaust
cold air kit
center force clutch kit

I left the line at 4000rpms and pulled the front tires about 18" off the ground. The truck settled down then went down to about 270 before I hit the dip in the track and pulled to front tires again and sheared the yoke off the 14ff.

Im changing to a high angle driveline heat treated flange with a 1480 flange.

 

Good to know about the upgrade from High Angle, I'll definitely keep that in mind, thanks.

 

yup 8.1l has 11.5 am.. i regeared to a 4.56