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Old 06-17-2007, 02:19 AM
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Default Kenworth vs Mack, & T600 vs T800

What are the chief points of difference between the T600 and the T800 ? Which one would be more suitable for hauling pneumatic bulkers ( cement & sand mainly ) within a radius of about 800 km ( 500 miles ), combined with city work ?

For the same application as above, which would be a better buy used : Mack or Kenworth ? What other truck would be well-suited for this kind of work ?

Also, what kind of engine would be most suitable ? I'm looking at a GVW rating of 63,500kg ( 139,700 lbs ), 18-speed, minimum 475hp for pulling hills. Key considerations :

-- fuel economy
-- inexpensive maintenance
-- reliability
-- easy availability of spares
-- endure extreme cold

I would really appreciate some advice.....I'm trying to build up an information bank for myself, for reference in the future.
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Old 06-17-2007, 02:34 AM
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I believe T800 is written all over that job description, but what do i know? :roll:
Oh, i forgot to mention C15 550! :wink:
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Old 06-17-2007, 03:03 AM
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well forget a MACK you can only get a 460hp unless with you with a CH or is it the CL then you can get a 565 cummins.
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Old 06-17-2007, 05:10 AM
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The T-8 is more suited to what you want to do than the the T-6 plus you might find you can't get a heavy front axle in the T-6. Kenworth over Mack any day. Macks in the last 5 years have had some serious turbo issues in thier higher horsepower engines. Although I'm a CAT man I'd be tempted to go Cummins because ofthier simpler EGR system and Cats seem to be harder on fuel than some others.
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Old 06-17-2007, 12:05 PM
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I would probably go with the T800 given the choices you mentioned. I prefer CAT and have had good service out of them. A cummins is less expensive to work on. Detroit also makes a good engine, but for heavy haul I would go with CAT. I think they are better put together. In any case, I would stick with one of the big 3 engines: CAT, Cummins or Detroit. Availability of parts and service should be comparable. Fuel mileage will probably be slightly higher with Cummins, although I consistently do more than 6 mpg with my CAT's. CAT is known for their torque, which is important with heavy loads and mountains. If you go with at least a 500 hp engine, the new Cummins have been doing well with torque. Most people I know who do heavy haul seem to prefer CAT.
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Old 06-17-2007, 12:42 PM
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I'm ashamed of you Mackman.

Go with a Mack get a 460HP 18spd it will pull anything you want it to.
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Old 06-17-2007, 06:30 PM
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I'd vote for the T-800. I've got one running OTR and for the most part have been happy. I've got some compatibility issues between my suspension and s-cam setup, but you'd be running a heavier suspension so it wouldn't be a problem. It's a solid truck and is very easy to work on. I've got a ISX ordered at 475 and 1850 but since bumped to 550. Have had no complaints with that engine. Decent fuel mileage and no real issues. Going through the spec process, you've got a lot more options with the T8 than the T6 when it comes to heavy apps like you're looking at.
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Old 06-17-2007, 11:32 PM
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What would you recommend for the suspension ? What kind would be suitable for the application that I have in mind ? Also, when we talk of front / rear ends of, for eg 12,000 & 44,000 respectively, what exactly do those figures mean ?

Finally, when it comes to the power aspect, which is the key...horse power or torque ? Would it be okay to go in for something with average hp, say 430-450, but a huge amount of torque ? How would it affect pulling power and performance ?
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Old 06-17-2007, 11:57 PM
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Quote:
Originally Posted by Graymist
which is the key...horse power or torque ?
Definitely torque, especially for your application!
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Old 06-18-2007, 12:12 AM
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fuel economy? in a heavy haul truck?


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