Splitting gears

18 speed low hole is 14.7, 8LL in deep reduction is 15.2 or something like that

low gear in OD on an 18 is a 12.xx like the 13 speed

 

2 speed rears?

 

No Sir, the 3rd lever set on the right side of the transmission, and shifted the back box on the main transmission…

 

Drove a 1972 Louisville with a 8V-71, backed up with a 5x4 twin stick setup. As my Dad says, you could grab gears by the baskets full…..

 

If you look to the right side you can see the linkage from the 3rd shift lever to the rear box….

 

@Oxbow you have any knowledge of this setup? I’ve driven a lot of older trucks, but this predates me lol….

 

The auxillary is mounted so far back to make it easier to remove the main transmission when needed , or is there another reason?

 

My guess would be to eliminate having a carrier bearing included in the driveline. There would be 3 driveshafts instead of 2 if the auxiliary was up closer. It’s a pretty long wheelbase truck….

 

I've drove 1 or 2 rigs with sticks. This one Mack had a tri stick set up. 5 main,4 aux,2 spd hi/low transfer. A logger 10sp, 4 spd aux with 2 spd rear ends.

 

Nope. That's a new one on me.