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Re: O.T. Calling all Powerstroke owners with ZF 6
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Posted by TheRealRon on August 20, 2004 at 11:35:56 from (69.179.0.225):
In Reply to: Re: O.T. Calling all Powerstroke owners with ZF 6 posted by Shane on August 20, 2004 at 10:54:32:
The transmissions used behind high torque light truck engines are about 95% ATs. The primary reason is clutches. MT's eat clutches like crazy. AT's have far more clutch surface to distribute the load over and are shifted by a computer which is far better at clutch pack management than any human being operating a foot clutch. When pulling very heavy loads, ATs clutches far outlast foot clutches. The secondary reason is that AT's also have torque converters which at least double the available torque from a standing start... perfect for towing. Your point about large trucks might have been true 20-30 years ago but today AT's are even used in off-highway construction equipment. Allison makes them and they are rated for over 4,000 lb. ft. of torque!
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