Forum Discussion
sjholt
Aug 27, 2016Explorer
If you have a 5.9L diesel and are running at 70 mph @2000 rpm- Leave it alone because you'll need the gearing for climbing the hills.(6 speed trans). If you have a 4 speed trans- good luck with that.
If you have an 8.3L diesel then yes a gear change will help with that.
As far as my MH- 4.88 gears and a 6 speed trans puts me at 1900 rpms @ 65mph- Ideal for the 5.9L cummins and gives me 10.4 to 11.1 mpg.
If you have an 8.3L diesel then yes a gear change will help with that.
As far as my MH- 4.88 gears and a 6 speed trans puts me at 1900 rpms @ 65mph- Ideal for the 5.9L cummins and gives me 10.4 to 11.1 mpg.
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