The 7.3 will do it. The 6.4 will be reving it's head off climbing up mountains at elevation. The Hallmark will be 2800# by the time it's wet+4 occupants. Aisin,6.7 and regeared if you go with 37's. I found the early Thuren coils to be too soft even for my standard cab and 2300# wet Northstar popup. Stage 4 up front and 2 I believe rear. The diesels kill it on passing cars too,along with stiff headwinds.. The temperature gauge hardly moves.Your only reason for going diesel is to get over the mountain passes? Any gas engine in those HD trucks will do that just fine.
3500 w 6.4L or better yet, F350 w 7.3 is what I’d go with.
Same here. My 5.9 and G-56 have been perfect.Now the steering...that's taken some aftermarket doodads to fix. Initial price is higher but the resale recovers much of that.I don't know why lots of people say diesels are hard to maintain or not worth the cost hassle. I bought my 07 CTD with 80k miles and now have over 200K. I have not spent any more money on this truck than any gas vehicle I have owned. I love the power, torque and fuel mileage
Here is my first draft of our new overlanding build -
Truck
Dodge 3500
Diesel – so can have tons of torque going over the Colorado passes
Thuren Suspension which includes - King 2.5" kit includes front coils, front track bar, and front and rear King 2.5" remote reservoir shocks
Leaf springs – factory
37 inch tires – Nitto Ridge Graplers – Load E
Expedition One bumper so can carry spare tire
Camper
Popup Truck Camper – Hallmark Milner - http://www.hallmarkrv.com/campers/hallmark-milner/
Base Weight – 1,212
Slide in into normal bed and not a flatbed
Questions
1. Is there anything I am missing on this build? What would you change?
2. My goal with the Thuren suspension is to make the ride quality a bit softer, but at the same time keep the factory driving characteristics (no wandering, easy to drive down the highway going 80 mph). Do you think this build would achieve this?
... I would buy brand new and was thinking if I went with the high output diesel with 1,000 lb of torque the re-gearing could be skipped.
.. I like to keep things factory if is possible.
As many forum members have suggested, a gas engine would likely work well for you.Fords 6.2 (385HP/430TQ) gasser makes more HP than the beloved 7.3 (275HP/525TQ) diesel and in my opinion tows as good if not better...with less noise, smoke, and drama. The new 7.3 gasser (430HP/475TQ) and the accompanying 10 speed absolutely humiliates the old 7.3 diesel. Modern gas engines are no slouch and are replacing diesels in many commercial fleets.
If it was me, I'd probably get a F350 with the 7.3 and forget all about the Diesel world.
Today's diesels are making the same horsepower (or more) as the gassers and double the torque. Either engine will get you there though.
However: The Ford 6.7 Diesel makes 475 HP 1,050 pounds of torque. We are not talking about the old 7.3 bus engine here.
Check out the stats here:
https://www.thedrive.com/news/30030...v-8-wins-engine-war-with-1050-lb-ft-of-torque
YMMV