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2,176 Posts
While I don't have a automatic, I do have a 5 speed. Shifting into 5th on the freeway is sweet. The nice
thing about overdrive is running a lower rear gear then you normally might. I have 3.55 and it just idles down the freeway. I'm considering 3.80 or 4.10, I still will have nice low freeway RPM.

1966 Mustang Coupe, 302 custom roller cam, holley 650dp,
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