What gear ratio is better for torque?
A numerically higher axle ratio provides a mechanical advantage to send more of the engine’s available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.
Are 3.08 gears good for highway?
The 3.08 will give you slightly better highway mpg’s. In town and avg. mpg’s – the 3.42’s are 1.5mpg better. The 3.08 gears lug the motor and make it a slug.
What is the difference between 3.73 and 4.30 gear ratio?
A 4.30 ratio will give you better low end acceleration but also lower gas mileage. A 3.73 ratio will still provide decent acceleration but will also provide a tad better mileage plus give you a higher top end speed.
Is there a big difference between 3.42 and 3.73 gears?
The difference in towing mpg between the 3.42 and 3.73 gears at highway cruise speed, under the same conditions, should be less than 1 mpg because of the slightly higher rpm running 3.73s. Vehicle speed actually plays a bigger role in fuel economy than engine rpm.
Are 3.42 gears good for highway?
It would be better to determine how much and what speed highway driving will be in the mix. You can also have different diameter rear tires to moodulate the effect of the gear ratio. 3.42s are a real nice all around street & freeway gear.
What gear ratio do I need for 35 inch tires?
Gear Ratio And Tire Size Calculator
| 3.31 | 5.71 | |
|---|---|---|
| 34″ | 2126 | 3668 |
| 35″ | 2065 | 3563 |
| 36″ | 2008 | 3464 |
| 37″ | 1954 | 3370 |
Which RPO code is for gear ratio?
GM RPO Codes – Factory Identification Labels and Interpretation
| RPO Code | Description | Ratio |
|---|---|---|
| GT2 | Axle Rear | 2.29 |
| GT4 | Axle Rear (Dup of 5X1) | 3.73 |
| GT5 | Axle Rear (Dup of GT8) | 4.10 |
| GT7 | Axle Rear | 3.33 |
What is the best gear ratio for a semi truck?
The best ratio is to have your engine run at the sweet spot RPM at the speed you will be running most of the time. If you run the east coast mainly then 65 if you run out west allot the 70 or 75 in the sweet spot. Usually the Detroit’s like it around 1400-1550 or so is a good range.
Is 3.36 a good gear ratio?
3.36 would be a higher ratio. Lower the number higher the ratio. You want the real deal advice from DD as to what RPM that your engine gets the best fuel economy, and then run at that RPM.
Is 3.55 a good gear ratio?
For example, a truck equipped with 3.55:1 axle gearing will accelerate faster than one equipped with a 3.31 axle ratio. BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.
How much does it cost to change the gear ratio in a truck?
As to cost, depending on where it is done, it could cost you as little as 750 dollars to as much as 1500 dollars per axle. Best prices would probably be a performance shop that does it all the time.