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Why Overdrive? 120-130 1967

posted by  someone claiming to be Charles on  Mon Apr 11 16:33 CST 2005 [RELATED]

Consider that most of Sweden was dirt roads in 1967, and you will understand why these cars were not geared with freeway driving in mind. The engine turns about 4,000 rpm @ 65mph in fourth gear, depending on your final drive ratio. IMHO, this is "too fast" for sustained cruising and will definitely accelerate engine wear, especially up top - and these motors already have something of an infamous reputation for cam failure.

An overdrive transmission (M41) will knock off almost a thousand rev's at speed.Should improve fuel economy by a respectable margin as well.






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