moparnorth
Well-Known Member
which is the better gear ratio for city and highway driving 323 or 355?
rear tires 275-70-15 also highway drive 25% of the time...and how tall are your rear tires? .... and what is the typical highway speed limit in your neck of the woods? .... and how far/how often do want to comfortably drive at highway speeds? These factors make a big difference in choosing.
rear tires 275-70-15Depends on your rear tire size also.
Those are 30 inch tall tires. Between your 2 choices given, you will want 3.55's imo.rear tires 275-70-15
what is a proper first gear ratioAlways loved 3.55s better from a standing start. If you plan to cruise mostly and long trips then 3.23. If you want to have the best of both get a good tight convertor that flashes high and run the 3.23.
If 4 speed then 3.55 is probably better then 3.23 overall depends a lot on the 1st gear ratio.
also with over drive as a 4 speed with 383
sorry the tires are 275-60-15 not 275-70-15 and O/D with 4 speedI'm not exactly sure what you are saying here. Is it an overdrive 4 speed manual transmission? If so, should be 3.09 first, and 0.73 OD. I would go 3.55. That would be like a 4.10 behind the more typical 2.66 first gear 4 spds. But your tire is really tall.