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Transmission choices. Larry Elmendorf 4-1-08  
I am looking for an alternative to my present transmission. I currently have a 27' MH on a P30 chassis, nonmolested, 454 backed by a nonlocking 400thd. I obvously dont get MPG, better Gas stations per mile. I have looked at the AT545 and can get one for little or nothing, but it looks at second like that would only gain me an extra gear, not the ratio, or efficency of.67 or better. I dont need an under over splitter, I need to reduce the RPM's at cruise.
Re: Transmission choices. wrench 4-11-08  
You don't state what year is your RV, if the engine is fuel injection you could probaly get better fuel management(programer or chip) & gain some HP & torque that would help. If you drop you RPM too much & don't upgrade the power you will lug the engine down & it will be worse. The AT 545 is non lock up, so the only advantage will be at the take off with 1 more gear.
Before I would go to that extend, I would look in repower with a duramax with the allison 1000, then you get torque power & double overdrive with the later model tranny. Even with higher price on fuel, the way to pull weight is still with diesel engine, till I can come out with that water engine.
good luck wrench
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