What is the best gear ratio for street racing?
What is the best gear ratio for street racing?
If it’s a daily driver, chances are you’ll want to keep your gear ratio at 3.23 or below for optimal performance and lower cruising RPMs. For street and strip applications, a popular choice ranges between 3.42s and 3.90s, giving you that extra oomph on the track while maintaining a tolerable cruising RPM on the street.
When do you need to know the gear ratio on an F-150?
Over the years, the F-150 came with an assortment of rear ends and gear ratios depending on engine size and options. Knowing the gear ratio of your F-150 is important if you have to replace the ring and pinion gears due to breakage, or if you want to change gear ratios.
What does a gear ratio of 4.56 mean?
It is controlled by the number of teeth on the ring vs. the pinion. A ratio of 4.56 means that as the axle turns one whole circle the driveshaft turns 4.56 circles. The higher the number the lower the ratio becomes. The correct axle gear ratio is important for drivability and economy.
What should the after ratio be on a 4×4?
Calculating for the after ratio of 4.88 gears and 38 ” tires gives the RPM of 2805. To sum it all up it can be handy to use this table for both your front and rear axle gear ratio selection. It is based on the above formula.
What should the gear ratio be for drag racing?
Sometimes there may be just two options, with the choices limited to a close-ratio or wide-ratio transmission. The basic difference in applications is between drag racing, with its standing starts, and road racing, where minimum speeds are possibly around 40 mph.
Over the years, the F-150 came with an assortment of rear ends and gear ratios depending on engine size and options. Knowing the gear ratio of your F-150 is important if you have to replace the ring and pinion gears due to breakage, or if you want to change gear ratios.
How to pick the right gear ratio for your needs?
At this point, the serious racer might take his dyno torque curve and use a computer to convert it to thrust at the rear wheels in each possible gear ratio, then plot it against speed along with the bar charts of track speed. This can be seen in the top of Figure 1.
Calculating for the after ratio of 4.88 gears and 38 ” tires gives the RPM of 2805. To sum it all up it can be handy to use this table for both your front and rear axle gear ratio selection. It is based on the above formula.
What should the gears be on a Ford F-150 STX?
But while some recommend 3.73 gears, other recommend jumping up to a 4.10. Which makes the choice even harder. “2018 Ford F-150 STX trucks come with 275 55 R20 wheels stock,” said ford390gashog. “I wouldn’t waste my money going to a 3.73. Yes, it will be noticeable.
