CHanging rear end, paccar motor

[flatbed94kid]

lonestar how are you liking your new rears? is it pulling better? mpg?

I hear some guy on hear got his from a salvage yard I think, like $1500?
yea way less but how big of a job is changing out the rears?

My thinking is you need to have new "U" bolts made and at a strength to hold the axles
good and tight. I bet some special or 2 different bottle jacks or axle lift. I just wonder why about almost every other truck passes me up climbing the mountains, even if I am light weight it just seems my truck doesn't have the power. But yes I am not giving it a hard foot. Rawze, the way you drive, are you slower then most others in the hills?

The newer trucks are geared like high, like 2.47 or whatever. I bet they are all geared like that passing me. Is it the new automatic transmissions why they pulling better?