Using the calculator, we inputted a much lower rear gear, one that matches up better with the higher rpm capabilities of modern engines like GM LS and LT V8s, the Ford Modular and Coyote V8s, and Gen III/IV Hemi engines. Now at normal highway speeds, cruising at 2,200 rpm fifth gear is much better suited for 55 and 65 mph cruising, and sixth gear is ready for interstate cruising of 70 mph and above. At the same time, first through fourth gears will give great acceleration on the street and at the track with high-rpm shifting.
Using the calculator, we inputted a much lower rear gear, one that matches up better with the higher rpm capabilities of modern engines like GM LS and LT V8s, the Ford Modular and Coyote V8s, and Gen III/IV Hemi engines. Now at normal highway speeds, cruising at 2,200 rpm fifth gear is much better suited for 55 and 65 mph cruising, and sixth gear is ready for interstate cruising of 70 mph and above. At the same time, first through fourth gears will give great acceleration on the street and at the track with high-rpm shifting.