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<p>[QUOTE=&quot;Superhauler, post: 7070884, member: 38460&quot;]I ran a 169 13 spd over&nbsp; 1 million miles heavy hauling.&nbsp; (132000 to 150000 lbs) with a 1760 driveline on 40000 rears at 3.70 ratio. Never had a failure except one front rear at 1.2 million miles. That was with about 700 hp at the time. Changed trans to a 189 18 spd at 1.3 million miles when the 13 started to (rattle) a little on a hard pull, but it never failed. It is how you drive it. Hard and fast failure will happen. Easy and soft could last forever. Now, the truck I run now has 46 rears with a 229 18 spd and spl driveline. One Trans failure from poor workmanship on rebuild and one rear failure from a bearing failing. Go figure! But I also work in some crapy mud holes also. And I&#039;m pushing north of 750 hp to south of 1000 hp.[/QUOTE]</p><p><br /></p>

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