Assistant Chief Constable Steve Thomas was caught doing 104mph on the M6 toll road.
He was fined '450 and had his licence endorsed by North Staffordshire Magistrates sitting at Stoke.
Thomas said: "On the day in question, the driving and road conditions were good and I was part of a group of around 15 cars all doing around the same speed.
"I considered that my manner of driving was safe.
"However, exceeding the speed limit by this amount is unacceptable and I sincerely regret my error of judgment.
"Excessive speed is a contributory factor in many road traffic incidents and it is everyone's duty to drive safely and at a reasonable speed at all times.
"I remain committed to reducing the number of serious road traffic accidents that occur in Greater Manchester."
A Force spokeswoman said: "Mr Thomas is responsible for traffic duties at Greater Manchester Police and that responsibility will remain."
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Dave, Manchester (30/04/2004 at 09:22)
EVERYONE has speeded in their lifetime, policemen, judges, teachers, doctors, everyone!
He's speeded, paid a fine and that should be it. Why should a decent policeman, who's done a lot for Greater Manchester lose his job?
Greater Manchester shouldn't have to suffer losing a decent copper so the media can make headlines from it for a day.