What gear ratio is best for drag racing?

What gear ratio do drag cars use?

One of the primary reasons why the 9″ Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1.

Are 3.73 or 4.10 gears better?

A 4.10 rear axle ratio is ideal for towing larger 5th Wheel or Gooseneck trailers. FACT: A 3.73 axle ratio is ideal for towing heavy loads on flat terrain and will produce increased fuel economy during steady-state, long-distance highway driving.

Is 3.55 or 3.73 gears better?

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 3.73 gears good for racing?

They require less power, and accelerate from a dead stop much quicker than taller gears, but you can’t cruise very fast down the road without running out of leg RPM. … Shorter gears (higher numbers) are much better suited for accelerating, such as 3.55, 3.73, 3.91’s, 4.11’s etc.

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Does gear ratio affect horsepower?

A higher numeric axle ratio (4.11:1) keeps the engine running in the higher horsepower range, thus improving performance.

Are 4.10 gears good for highway?

Installing 4.10 gears improves the car’s performance on the track but with negligible effects to the highway driving. … Switching from a gear set of 3.55 or 3.73 to 4.10 gears will affect your gas mileage slightly as your engine will be turning more times to rotate the rear wheels once.

Is 3.42 or 3.73 better?

The 3.42 is fine for towing smaller boats, plus you will get better gas mileage for everyday driving. If I were towing frequently on hilly roads, I might would go for the 3.73 for better gas mileage while towing, but the 3.42 should be fine with a 205.

Are 4.10 gears good for 35s?

4.10 will be just fine for 35’s and Especially if you get a 4:1 transfer case for off road adventures. I recently went from 3.21 to 4.10 with 35″ Terra Grapplers. It made a huge difference on my 2dr with manual transmission, It’s just about perfect around town. I run at about 2400rpm at 70 in 6th gear now.

Will 4.10 gears make my car faster?

Put 4.10:1 gears in the same car, and engine speed increases by 1060 rpm—the difference is 40 rpm per mph with the 3.08s versus 53 rpm per mph for the 4.10s. … Another way to look at it is that the car will go faster at the engine’s rpm limit than it would with lower gears.

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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.

Does gear ratio affect mpg?

Gear Ratio Effect

The effect is generally minimal and will account for less than a single mile per gallon, and typically the gains are generally seen at highway speeds. … The transmission gearing directly affects the fuel economy at a given speed. The engine’s rpm and fuel consumption are generally lower in higher gears.

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

Are 4.88 gears good for highway?

You can get down the road just fine, no surging, reasonable power. Its also true that doing so comes with a lot of gear hunting on the highway. But its seriously not an issue, you’ll just spDend a lot of time in 6th going down the road.

Is 3.25 a good gear ratio?

3.25s are a good all around gear.

Can I run 35s with 3.73 gears?

Well-Known Member. You can do it but it’s definitely not ideal. The ratios with a 5.13 first on a 3.73 rear end and 35’s (your proposed setup) is very slightly taller than what a stock 6MT Tacoma is in first gear so it’s not like you’re going to be causing massive wear getting started.

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