[bestclimb]

I have used a few samurais over the years, great little rigs but they do indeed suffer from a lack of horse power when runnin at highway speeds. With a webber carb nd 235/65s I was able to keep going on level ground at 70, on the first bbl in 5th any wind or uphill down shifting was pretty much required. My milage when in town was about 30ish till I moved to the bush then I was lucky to get 20mpgh. (4x4 engaged and slogging through dirt, snow, short trips and the like)

When cruising in 4th or 5th gear even with identical throttle positions you are sucking more air through at higher rpm which mean more fuel as well.

You can feel with the accelerator petal where the second bbl on the carb opens up ride wide open on the first barrel and let the truck do as best as she can, down shift when you have to and use the second barrel if that can't keep you moving fast enough.

Cal mini performance, petroworks, and rocky road outfitters have stuff that may help. a low rpm torque cam Will likely be high on my list for the next one. The help in fuel economy wont necessarily pay for a cam, but they do help in the off road drivablity department.

I am pretty sure that the 1.3 puts out about 65ish.