Dave,
Wow! I got this out on Chevrolet's web site:
Duramax Diesel 6600 V8
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For production units through Sept. 2005 with the Allison six-speed automatic transmission:
310 horsepower @ 3000 rpm
605 lb.-ft. of torque @ 1600 rpm
For production units after Sept. 2005 with the Allison six-speed automatic transmission:
360 horsepower @ 3000 rpm
650 lb.-ft. of torque @ 1600 rpm
With the Hydra-Matic four-speed automatic transmission:
310 horsepower @ 3000 rpm
605 lb.-ft. of torque @ 1600 rpm
With the ZF six-speed manual transmission:
300 horsepower @ 3000 rpm
520 lb.-ft. of torque @ 1600 rpm
650 fpt is a whole lot of umph! I am sure which ever one you end up with you will be happy. I had a Chevy, test drove and test drove both gas and diesel engines until my wife wanted to disown me. Finally wound up with a Dodge and couldn't be happier. Good Luck and Happy Holidays.
God Bless America
Jeff Heiser
Merritt Island Florida
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