Length difference between front and rear axles on M923?

[LCA078]

I've search the forum and net but cannot find the axle length (hub face to hub face) for the front and rear axles on a M923. Really what I need is just the offset between the two as I'm trying to understand wheel offsets when singling out the truck. I don't mind mixing steel and aluminum wheels, but want to know how the front/rear wheels will be to each other with different combos.

 

[74M35A2]

Mine’s longer...

 

[gimpyrobb]

There should be no difference if its a truck that is singled already. If you have duals on the back, all you need to do is flip the hubs and you'll be back to the same width.

 

[98G]

There should be no difference if its a truck that is singled already. If you have duals on the back, all you need to do is flip the hubs and you'll be back to the same width.

I dont think this applies to the 939series trucks.

 

[LCA078]

On a M939, the brake drum connects to the hub with same studs that hold the tire so you can't flip. A duece brake drum uses the same bolt pattern as axle connection to the hub so you can reverse the hubs.

Rear hubs on M939, from the -24P, page 316, fig 315

 

[LCA078]

I forgot to mention in my original post I don't have access to the truck so I can't just crawl underneath with a tape measure which is why I asked the question. I'm not THAT lazy.