Is my truck able?

I immediately see the rears being an issue.
40k lb rear axles I guess? The ratio is totally wrong for a 9 axle setup, even if you kept the weight off them.
If you want to keep the truck, then maybe look into some 46k lb rears from a wrecked rig. I see them for sale used quite often. The 46k would give you some wiggle room for strength over what the normal 40k rears do.
A 9 axle should be double framed though in my opinion and experience. I had a 4 axle W9 years ago, and would not run a single framed, small front axled rig on a setup like that.
You are getting into decision time I say. Either get a truck that is set up for it and be prepared to be very heavy when empty, of stick to the occasional heavy load, and pull a 3 axle RGN maybe?
Martin

 

that will be ok up to around 132000lbs. over that i would run 3.90 rears or 4.11 and maybe a higher torque clutch if you have alot of miles on it. start going over 150000lbs it is nice to have 46 rears but 40's will do as long as you dont get to crazy.

 

A nine axle setup is (or should be) 150k lbs or over. I ran with a girl who was getting into it when I had my 4 axle. She had a normal 3 axle truck at the time, with 3.54's IIRC. Lots of power etc, but setting off on a steepish grade when loaded at @130k lbs ate her clutch for lunch.
Up to 6 axle, normal setups can be fine, over that and you need the tool for the job in my experience. Wouldn't like to see the OP blow a rear end, clutch, etc when setting off up hill running that heavy.
Can it be done? Sure. Can it be done reliably? I personally do not think so.
Just my .02
Martin

 

it can be done.reliable yes.i pull around the 140000 mark all the time with 40 rears 18918 and 3.70s never had a failure of the drive train. heavier specs like 46s and doulbe frame yea it would be nice. but really dont need it if you behave. my last truck had over 1.3 mil on it hauling heavy for 12 yrs had one rear fail at 1.1 mil. on 40s with a 16913 original trans. truck is still going strong to this day for the boy who bought it. i can haul 150000 on 8. but do i want to NO! it has to be just right to do it. 9 would be perfect. if you have the right mind set it can be done with the lighter specs. not arguing just stating a fact. i agree with you assesment, but it can be done all day long with the lighter specs if you dont hotrod it.

 

if thats the kind of weight your looking at pulling then yes heavier specs is the way to go no question!

 

I have some friends from upstate New York that have been running the same set ups for 15 years pulling a pair of 2-3-2s. Landstar owners do it all the time. Personally though, I would want two speed rears. I can't think of the name of it, but there's this auxiliary box that you can buy that bolts to the rear of your tranny that will give you the deep reduction gears you would need to pull a big load out of a hole.