I don't know. What I do know is that the gassers shift down, and rev higher, causing the exaust gasses to get much hotter. Transmission also gets a lot hotter. Everything gets much hotter. When I pull hills (Now I'm talking towing here) with a gasser, I can smell the heat, and hear the metal expanding/contracting. Transmission temps reaching 200*+, and that's not pushing it. It's the heat that is the killer. I can't believe GM (or any others) are making a gasser that won't get HOT towing hills. My diesel shifts up pulling the same hills, with the same loads. Transmission temps are around 130* - 140*. No hot smell, etc.. A night & day difference. It will float up the hills, not shift down & rev. Why do you think the choice for big rigs is diesel? Diesels rev less, run cooler, and have way more torque. EXAMPLE: A GM 6.0 has around 350 foot pounds of torque. My 2011 Duramax has 765 foot pounds of torque. That's more than double the torque. A diesel engine will out live a gasser 3 to 4 times. They get better milage than a gasser doing the same job. The fuel cost more now, so that's kind of a wash.
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Today's Featured Article - A Question for Dads This recent topic from the Tractor Talk discussion board is being highlighted because it is an awesome display of the caliber of individuals that have made this site their own. The young person asking questions received positive feedback and advice from total strangers who "told it like it is" with the care many reserve for their own kids. The advice is timeless... so although it isn't necessarily antique tractor related, it will be prominently displayed in our archives to honor those who have the courage to ask and those who have the courage to respond in an honest, positive manner.
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