Rear gear ratio with T56

[65 drop top]

I'm looking for recommendations on gear ratio for a Ford 9" rear. Its going in my 55 Chevy. Rear tires will most likely be 335 or 345/30/20. Engine and trans will be some sort of LS with cam and a T56 trans. Looking for over all drivability without too short of a first gear and still able to use 6th on the freeway. 3.70? Thanks

[Rucumn]

I have 3.90's with my T56 under a '67 chevelle....perfect set up!