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<p>[QUOTE=&quot;Cdubb, post: 11969620, member: 161853&quot;][USER=289691]@MadScientist[/USER]</p><p>Im glad to hear you speak highly of the 3176, I know it has a mixed reputation but I think most of the negativity stems from the early ones or guys who expect the power a much larger engine has.</p><p><br /></p><p>I haul grain and feed so I run right at 80k when loaded, mostly flat lands, I’ll never see the mountains in that truck. Irish Hills in Michigan would be the steepest stuff it would see. I plan to run a lot of 55mph speed limit roads but I need the flexibility to also be able to run at a respectable highway speed, no less than 65 with out maxing my RPMs out. It worth noting my main elevator I work for has some city driving too which right now it’s not set up bad for that until I hit the highway.&nbsp; I have access to a van trailer so I would like to be able to pull loads from a board during lean times and around here those require the highway or turnpike. Right now 1900 rpm puts me right around 60-61mph, fastest I’ve gotten it on flat ground is 63 and she was screaming. I’ve only gotten a small sample size but I’m getting around 6.5-7 mpg mixed driving with idle time so I think this motor doesn’t mind RPM but I’ve gotten conflicting opinions about that. I’m thinking if I can get it down to 17-1800 rpm at 68 that would be ideal unless we should aim for lower RPMs than that.</p><p><br /></p><p>Yes I messed that up RT12609A is the current trans</p><p><br /></p><p>[USER=317618]@Big Road Skateboard[/USER]</p><p><br /></p><p>I would love a 13 or 18 speed again, ran an old KW with a B model and a 18 speed as a company driver, that old girl spoiled me. I know I’ve seen some 13 speeds that had a .87 or .86 final drive ratio, I’m sure 18s can have that ratio too.[/QUOTE]</p><p><br /></p>

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