Join Date: Jun 2011
Location: Keephills AB CAN
Mentioned: 1 Post(s)
Quoted: 182 Post(s)
I have a 7650. I believe they run the same power train. Mine will actually hesitate for a second when downshifting especially third to second. I had a tooth break on the rear differential pinion. Let's just say that is an expensive little unit. Was over $8k in parts for a crown and pinion, spider and side gears, and bearings.
What size of duals are you running? I have a buddy with 7650 that has 30.5-32 on it. He's run them a few seasons and had good luck with them so far. He was also worried about the axles but so far so good.
Did your axle break inside the drop box? I've wondered about what kind of ride that would be when working on sidehills.