How to find Glider truck specs?

There were many more than that. Anyone could walk into the dealer and order a glider if they wanted one.

 

I see 355 on the top tag. What does it say beside it?

 

Look in the center of pinion shaft on the rear diff. You gotta really clean it up but it’s usually stamped there

 

The axle is a spicer d404 from the one tag, I would think both of them are the same ratio. You may have to pull the pig and see what the part number is on the ring.

 

Harrison Truck Center built a bunch of freightliner gliders. I think the are in Wisconsin. Supposedly they were built with factory rebuilt Detroit components.

 

I saw 555.

And 2 other sets of numbers. On that one tag.

 

Gliders generally did not come with factory rear ends, so it could have anything under it.
You can figure it out with math, run at 60 mph note the engine rpm in top gear and hopefully you know what transmission is in it.
Can use a piece of string taped on the driver shaft, rotate a wheel and count how many revolutions the drive shaft does for one revolution of the wheel.
3-1/2 turns = 3.55
3-3/4 turns = 3.73
A little less than 4 turns = 3.90
A little more than 4 turns = 4.11
etc