I've given it some thought as well. I think that the 4BTI could be fitted easily enough. I also think that you could probably fit enough sensors and pickups to the new engine to actually keep the cab in stock trim rather than hacking it apart to get a tach an speedo like some guys do... The thing that is troubling me is the gear ratios and the transmission. I have a 5 speed, 4x4. This truck has 4.10 axles.... yes, I was dumbfounded when I learned it has 4.10's! No wonder the mileage sucks. So here's the problem. When you stick a set of 3.55's in there to get her tach'd down to 1600 at highway speed, then you're going to have a very VERY fast first gear. I'd think you really need a T56 transmission with the bull low first gear to make this work any ways well.... and then you got to figure out how to mount a transfer case. I do believe that you need some combination of faster gears in the rear end or the double overdrive transmission, or both to get any mileage out of the combination. I think about 40 mpg is all you could hope for from a 4BTI with the right gearing, and probably about what you're getting now if you don't change the gearing.
I'm actually thinking of hopping up a 3 cylinder Ford should I ever get around to trying this, but that's because I like the engine. A 4BT would be a lot easier to find...
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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