Re: 4.11 and 3.78 pinion difference?
Just a question, but why not leave the 3.54s in for a 5k mile run? (Other than the obvious coolness of the QC.... but your car has plenty of cool without a QC)
You're running a '39 trans right, or do you have an O.D.?
Just seems like a few less revs on that long of a trip would be a little more pleasant
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