Transmission Gear Ratio Charts: Standard US & Import Gearboxes

Every automotive transmission features a specific set of gear ratios selected by the manufacturer to balance acceleration, fuel economy, and engine power. These ratios determine the engine's operating RPM at any given speed.

Standard Manual Transmission Charts

Here are standard gear ratio configurations for popular manual transmissions:

Tremec T56 (6-Speed): 1st: 2.66 | 2nd: 1.78 | 3rd: 1.30 | 4th: 1.00 | 5th: 0.74 | 6th: 0.50
Getrag 260 (5-Speed): 1st: 3.83 | 2nd: 2.20 | 3rd: 1.40 | 4th: 1.00 | 5th: 0.81
BorgWarner T5 (5-Speed): 1st: 3.35 | 2nd: 1.99 | 3rd: 1.33 | 4th: 1.00 | 5th: 0.68

"A gear ratio of 1.00 in fourth gear represents a direct drive connection, where the output shaft spins at the exact same speed as the engine."

You can simulate road speeds at specific RPMs using the automotive gear ratio calculator, which is essential when planning a custom rear axle off-road sizing upgrade.