Not Ranked
I have 3:31 gears in the Jag rear, and a 482 FE being built. In most of our cars, even a "mild" build, they are cammed enough that the engines are unhappy at low revs. You actually want a few more revs at cruise so that you aren't luggung the engine and having it run poorly way down below it's power band. Remember, at an average cruise speed, you're only looking at about a 500 RPM difference between .64 and .82 overdrive. It's not as if the engine is zinging along at 2000 rpm more, That 500 RPM is just enough to get the engine up into it's comfort zone with reference to the lower end of the power band.
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