So we bought our first rv, a 32 foot 1993 rockwood diesel pusher. We're wrapping up updating the old interior, and have started taking it out on trips more. Some of you may remember my air filter discovery ( How to add 10 hp to an old rv...
) and now that I have the correct new filter, and have done an oil change in the rig, I felt it's finally safe enough to take it out.
We took a couple of trips and in each one discovered just how bad this thing is uphill. The rig has a 190hp cummins, and the dreadful allisson 4 speed. Non-lockup, no overdrive. Basically, anything uphill will result in either, dropping down to 30mph or if I'm lucky, a downshift to 3rd and going 35-37 pegged at 2400rpm, well past the cummins' sweet spot it seems.
Would like to get a bit more oomph out of this rig, as right now I don't even want to think about attaching the toad (a jeep wrangler rubicon on 35s, so probably around 4000 lbs) to it. It did come with a bunch of Banks stickers, but I don't think they add any power
From reading about the transmission, it seems it is rated at most for 230ish hp; and some claim that by switching to synthetic to keep some of the heat out of it, can bump it up to almost 300. My main question is, what's the easiest/cheapest way of getting to 230 with the cummins? Fuel plate? different/rebuilt turbo housing? Injectors?
I'm not expecting a hot rod, but would like to stay above 40mph on the inclines, and not get passed by even older gas motorhomes
I would like for it to not be anything major, as we already plan on selling it by the end of this year and picking up something newer/stronger next year, now that we know we like it.
All suggestions are welcome!