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Joe is right on the target. Also find out on the ID tag on the engine what is the rating for the engine, ( 190, 215, 245, HP) Some are geared for mountain with a higher output, like 245, the it can take a much lower ratio in the rear end. Idealy your engine should turn not more that 1800 RPM at 60 MPH LOADED. If not loaded, 1600 RPM would be better.
Peek torque on those engine is around 1400 RPM, and is where it's the most economic to drive. So at 1600, when you hit a hill it will hold better till 1400, and at 1200 it will shift if auto or you shift if stick.
THIS IS JUST A BASIC, Would need lot more infos to make an accurated
recommandation on the ratio to use, like= loaded weight, hill or flat land,
engine rating, what tranny, trailer or not, driving speed, preferances(racing or economic).
wrench |
RV and bus conversion info since 1996.
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