My 85 f150 4 speed strait 6 4×4 how are they on prolonged trips 2 to 3 thousand miles? At 55 to 60 mph??

Asked by pureford92 Oct 10, 2013 at 03:57 PM about the 1985 Ford F-150

Question type: General

4 Answers
58,565

Tracy answered 11 years ago

The 300 straight 6 is an incredibly durable motor. At constant speeds, any engine will do well. At the speeds you mention, you won't be stressing it at all. I've been coast- to-coast with an Econoline equipped with a 300 six, full of family and pulling a trailer. I got 200,000 miles on a rebuild - enjoy! (of course, proper maintenance is key!)

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58,565

Tracy answered 11 years ago

Gear to gear - there is no timing chain.

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74,260

OJ answered 11 years ago

In high gear and at 55 to 60 your engine's rpm will be slightly over twice that of idle speed. If the bed is not loaded down with stuff or pulling a trailer. You should have no problem. I'd change the oil prior to the trip if close to oil change time.

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