Gearbox ratios.

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Question from one of our UK members re GT5S tranny......."My Pantera gearbox is 4.22:1 ratio. The car runs on 345 x 35 x15 tires. The car gives 71mph at 3000 rpm. Too many rpm for fast cruising. Do I need a 3.77:1 ratio or even this plus a high ratio 5th ? What is the best combination of gearing for fast cruising ? " All feedback will be most welcome. Thanks

9/12/028:15 AM

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