Gear ratios are easy to follow, once you have the basic formula understood. For example; if you have a 5.13:1 differential gearset, it means that for every 5.13 times the pinion rotates, the wheel ...

Where Does The “336” Come From In The Speed/RPM/Gear-Ratio/ Tire-Size ... In a more modern vein, Summit Racing has an online gear-ratio calculator . See All 4 Photos. Share. You May Also Like.

The chart shows gear number, gear ratio, total ratio (including final-drive ratio), top speed in each gear, engine rpm at 5 mph and engine rpm at 75 mph. Math was involved.

In a more modern vein, Summit Racing has an online gear-ratio calculator . See All 4 Photos. Trending. All Articles Cars Videos. Share. You May Also Like. MotorTrend Recommended Stories. Load More ...