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General Motors recently hosted a drag strip race against its Ford and Dodge rivals to demonstrate a new diesel and transmission powertrain. In an old airstrip up in Beiseker, Alberta, Canada, the world’s largest automaker showed off its new 6.6 litre turbodiesel V8 Duramax engine with 360 hp and 650 lb-ft of torque contained in a Chevrolet Silverado. The Ford truck was an F-250 with a 6.0-litre V8 pumping 325 hp and 570 lb-ft of torque, while the Dodge Ram had a 5.9 litre turbodiesel engine that produced 325 hp and 610 ft-lbs. of torque. All vehicles were automatics and each hooked to an equipment float holding a 3,200-kg (over three tons) tractor.

The Silverado won the race, followed by the F-250 and the Dodge Ram. While the Chevy's extra oomph no doubt played a part in its victory, the writer rightly attributes the win to the Silverado’s new six-speed Allison transmission that kept the pickup in its powerband's sweet spot more often that its rivals with traditional four-speed autos.

More details can be found at the link.

[Source: Toronto Star with picture by Howard J. Elmer]

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    • 1 Second Ago
      • 9 Years Ago
      People, learn to read, instead of just blaming GM.
      "Transmissions. All these trucks were automatics I noted; all running with the same 3.73:1 rear differential gear. But, while the new Allison had six gears, I realized the Ford had five and Dodge just four."
      So, the Ford had 5. There isn't any explanation as to why the Dodge came with 4, but if you want to perform the test on your own, feel free. Until then, be prejudiced.
      • 9 Years Ago
      Torque is what's most important when dealing with heavy loads. Remember, the formula for horsepower is

      Torque * RPM / 5252

      So horsepower is a function of torque AND rpm. With a lower engine speed, typical in diesels, you get less horsepower. But torque is what really helps.

      Right now, the most powerful big rig diesel engine puts out 2150 ft*lb of torque, but "only" 600 hp.
      • 9 Years Ago
      I am a prejudiced first time Dodge owner , My truck will be towing the Chevy to the boneyard.
      If you want to drag race , go gas
      Maybe Dodge will counter with gas equivalents , what an ad that would be
      • 9 Years Ago
      And this competition is important because?

      How many of you tow 7,000 lbs. AND drag race with it? The fact is, they'll all be falling apart and rattling at 120,000 miles. That's what's important to buyers.
      • 9 Years Ago
      torque gets you going--- horsepower keeps you going. think about it
      • 9 Years Ago
      to you jeff, the rating of big rigs at 600 hp and 2150ft lbs of torque is at the ground vs. at the flywheel in these little pickups. the big rigs really create like 900-1000 hp and 2500 ft lbs at the flywheel, but the tranny/splitter/two differentials/pto's/bigdamntires take a lot of the power.
      • 9 Years Ago
      Is winning a drag race really the point? I don't think so.

      To me, the most important things they will need to demonstrate are reliability and longevity. That's where the Cummins excels.
      • 9 Years Ago
      GM sponsored event? Ha! What a surprise. What a grand waste of fuel,air and money.

      Who gives a phlying phuck which brand wins a contrived irrelavent load dragging drag race? Let's see how many torque converters and tranny parts will be replaced at owners great expense by 200K miles. Assuming they don't rust out or for apart in some other manner.

      This is GM's Spandau Ballet. The heart is still beating but the brain of GM has been cut off of Oxygen a long time ago.

      Then again it was held in Canada. Maybe the Canucks are just happy to get outside and enjoy a nice warm sunny day. Any activity no matter how pointless is a welcome change to winter. Good for them. I like those guys!
      • 9 Years Ago
      for those out there diesel envious...the 6 liter was a problem from the get go....which ford knew going in....as far as fuel mileage..blame the CAFE requirements in regard to emissions production..the 6.0 problems is what forced ford to can the original idea of the 3.0 inline 4 (ranger, explorer and mountaineer) and 4.5 liter v6 (f150, expedition and navigator)..now that the "new" 6.4 is coming with all the fixes which navistar knew were needed from the beginning..what caused it where the cafe emission guidelines...the 7.3 powerstroke did not meet the 2005 emissions which ford had hoped it would so that the 6.0 could wait an additional year..but the new I4 and V6 diesels will be coming (adjusted in size from 6.4) and then we shall see what happens
      garry butler
      • 9 Years Ago
      please give us a break , my dad was in the mining business and we tried chevy and they would just not hold up . the gmc brand is just a glorified chevy but the ford trucks held up very well and made u s a lot of money.. i was once a chevy man but ford rescued a mining mans business ...... the gospel truth..
      • 9 Years Ago
      6 Liters to make around 300hp? I know they make lot or torque but even by diesel standards that's pathetic.
      • 9 Years Ago
      just too bad you can't have the Cummins with the allison....that would be sweet
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