Not Ranked
I agree with the concern over the usability of a .64 overdrive. It can be difficult to get into depending on where you are driving. While you can say that your car has the potential to go 180 mph or better, when are you ever really going to be even close to that? At first I was concerned about using a wide ratio top loader, worried about fuel consumption at highway speeds, reality is that with a mid-range rear end you are turning similar rpm's or better, than if you had an overdrive that you could not get into gear.
Jim
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