John when I find out more info like exactly what truck this came out of I’d be happy to write up a small piece with a few pics for the tech section. I was thinking this axle was from ford but since learning that there’s only 1/8” difference in hub size, dodge = 4-3/4, ford = 4-7/8. Getting a machine shop to enlarge the hub hole on dual type wheels is no big deal and 3/4 ton ford wheels work really well in our trucks and hubcap lips can be added to them as well. If a guy doesn’t like the idea of using a ford or dodge under he should remember Dana axles were used on GM trucks too. Most all trucks with leaf springs from 60-72 had Dana axles. Great things about Dana axles, they are so universal that parts are readily available and quite common. The ratio choice is good too, even with the much more common Dana 60 3.55 and 3.73 is readily available. The 3.07 is perfect for me with my direct drive 5 speed trans. With its 4th gear raio I can down shift if I need to and it will be just like running 4.50 rear ratio 1:1. I can still maintain 55-60 with that. If I down shift an SM420 4 speed I’ll be doing 30.
Last edited by bluechev; 02/28/2019 4:40 PM.
