Originally Posted by sojourner
Just read your entire thread. Way to go!! I'm in Sc and have almost the same bus! Love the AmTrans. Mines a DT408 though (with MT643). What kind of gears do you have? If you have the VIN you can get the build sheet from an international dealer. That spec sheet will tell you what the gear ratio is. I'm curious because I have 4.78 gears and am looking to change the ratio for something more highway suitable. My little 210Hp 408 did a fine job at maintaining 55-60 but with the gears really likes around 52. I'd love to be able to get 65 at around 1900 rpms. By the way I averaged around 11 mpg on my way home from Plainview, TX. The key to getting good mileage is find the "sweet spot" where the engine isn't laboring excessively and just leave it alone no matter what the speed. Looking forward to seeing what you do. Keep up the good work!!
The sweet spot for mine is at around 55-60 for cruising.
Gears are 4.44.
My Ward only has the 195 hp version of the dt466.
I'm toying with the idea of tuning up the fuel, advancing the timing, and maybe adding a small intercooler. Maybe...
But I'm happy enough to leave all that alone and worry about the motorhome conversion for now.
The only mechanical stuff I'm worrying with anytime soon will be replacing the rear air bags and getting two tires replaced. And addressing a leaky rear axle seal. I also plan on replacing some of the maintenance stuff in the braking system.
On another note- I may end up raising part of the roof. I'm thinking of going up 10" from the second rib to the second to last. Sort of between the wheels but a little longer. May trade a motorcycle I've had for a number of years to a fabricating friend for a roof raise and some other welding. We'll see. I'm still not 100% on that.