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Cattle Boards
Trucks, Tractors & Machinery
5.9 Cummins vs 6.7 Cummins
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<blockquote data-quote="DiamondSCattleCo" data-source="post: 633790" data-attributes="member: 2862"><p>The Aisin 6 speed is definitely a strong automatic, however there was nothing really wrong with the old 4 speed, as long as you didn't tow in OD and got the fluids changed regularly.</p><p></p><p>As for issues, one of the biggest issues is people idling without a high idler. At idle, even the 5.9 would clog the cat eventually, so if you idle alot, get a high idler. I wouldn't be remotely scared of the 6.7. There are tens of thousands of them out there right now with nary an issue, despite what you read on internet forums. Pick the truck you like and run with it. Either one will be fine.</p><p></p><p>If it were me, I'd be tempted to go with 6.7. Thats a fair bit newer truck for only 8Gs.</p><p></p><p>Rod</p></blockquote><p></p>
[QUOTE="DiamondSCattleCo, post: 633790, member: 2862"] The Aisin 6 speed is definitely a strong automatic, however there was nothing really wrong with the old 4 speed, as long as you didn't tow in OD and got the fluids changed regularly. As for issues, one of the biggest issues is people idling without a high idler. At idle, even the 5.9 would clog the cat eventually, so if you idle alot, get a high idler. I wouldn't be remotely scared of the 6.7. There are tens of thousands of them out there right now with nary an issue, despite what you read on internet forums. Pick the truck you like and run with it. Either one will be fine. If it were me, I'd be tempted to go with 6.7. Thats a fair bit newer truck for only 8Gs. Rod [/QUOTE]
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5.9 Cummins vs 6.7 Cummins
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