Thinking on a New T680

Get it loaded. Those trucks have a ton of storage. The fridge pays for itself by not eating all that fast food crap. They got a upgrade stereo system that rocks too... It's the little things that make it more enjoyable throughout the daily grind.

 

I would get lowpro tires. Proven better fuel economy since there’s less tire mass and the side wall is thinner so it doesn’t flex as much which means it has lower rolling resistance. I wouldn’t get the swivel seat either but the table is pretty awesome.

 

I'd go 500/1850@1000rpm X15-E , better fuel economy and pulls down farther than the "Performance" version with same Tq but at higher rpm.

 

I would be very cautious asking for horsies or in this case Oxen to keep moving at 1000 RPM. There has been only two engines in my time that would not quit until around 900 give or take 50 depending on which of us was driving them.

It's hard on the pistons to burn at 1000 or lower. It's also too close to a point at which it must reject moving forward and change to stalling/bucking you.

Maybe a slightly higher range gearing at 3.55 will help you here. Less strain on a engine that can lug down to 1000. Particularly if you plan on mountain work.

I am trying hard not to flip flop here. Everything has a sweet spot in trucks if they are built right for the job you intend to do with them. I cannot imagine 3.55 or so gearing will allow you to cruise at say 75, maybe that is where your transmission fits in this picture, two or more overdrive gears. I loved my 13's an 15's but for you I think you might want to consider 18. And if you can get several od's out of them maybe go with 3.45 or a touch lower So you can when on the flat get up and run without gulping all of your fuel tanks.

 

After my experience with paccar recently...

I would certainly not recommend any right now.... at least until the plant production slows down a little bit and they pay attention to what they're doing !!!