I have a 1968 Ford F100 with a 360 and 3 on the tree (no O/D). What should my top speed be? It seems like the engine works really hard at about 50-55mph.

Asked by Sep 27, 2013 at 12:45 PM about the 1968 Ford F-100

Question type: Maintenance & Repair

2 Answers

1,315

Probably close to 100 mph

1 of 1 people found this helpful.
25,315

It all depends upon your gear ratio. If you have something like a 4.56, your top speed won't be very high but you could pull down a mountain with it. If you had a 2.72, you could go well over 100 but couldn't tow much. Most trucks have a ratio between 3.50 and 4.10. 100 mph is about right.

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