If you’re looking for an edge in street racing, understanding your vehicle's rear end gear ratio is critical. Getting the right ratio can play a significant role in enhancing speed, acceleration and overall performance of your car.
Before rushing to buy any rear end gear ratio, here are some key factors to consider. First, determine your primary use for the car. Is it strictly for racing or do you also need to use it for daily commuting? Second, assess the horsepower of your vehicle. A higher horsepower typically requires a lower gear ratio for optimal performance. Third, think about the type of terrain you'll be racing on. If it's flat, you can opt for a higher gear ratio but for hilly terrains, a lower ratio will provide better acceleration.
Want to find the best rear end gear ratio for your street racing vehicle? Here are some questions that can help: Are you looking to improve the speed or acceleration of your car? Are you willing to trade off fuel economy for better performance? What is your budget? By answering these questions, you can better identify the specific rear end gear ratio that suits your racing needs. So, don't let this critical component take a back seat in your racing journey, upgrade to the right rear end gear ratio today!
10 Best Rear End Gear Ratio For Street Racing
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The product is ideal for improving traction and enhancing performance in vehicles with 8.5" or 10-bolt rearends.
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This product is ideal for improved performance and durability of GM 8.5/8.6 differentials in vehicles.
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Ideal for improving traction and performance in Chevy vehicles with 8.5" 10-bolt rearends, through installation of Posi, gear and bearing kit.
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Ideal for increasing traction and performance in Chevy vehicles with 8.2" 10-bolt rear ends, featuring a 3.73 gear ratio.
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The product is ideal for locking the differential in GM 8.5/8.6 axles with 2.73 and higher ratios.
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6
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This product is ideal for improving traction and performance in high-powered vehicles with 30-spline axles.
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The product is ideal for improving traction and performance on GM vehicles with 8.5 inch, 30 spline, and 4.11 ratio differentials.
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This product is ideal for improving the performance of a Ford 9.75 differential.
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This product is ideal for securing wheels on select models and comes in a pack of 200.
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10
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Ideal for upgrading or building hot rods, rat rods, and restorations compatible with Ford vehicles with a 54" rear end.
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1. Gm Chevy 8.5" Chevy 10-Bolt Rearend Posi – 30 Spline, Gear, Bearing Kit Package – 3.73 Ratio
Upgrade your Chevy with this brand new Yukon Dura-Grip (Clutch) Posi Unit, perfect for those who want to improve their vehicle's performance. With a 30 spline design, this unit is built to last and handle extreme conditions. It ensures that both wheels receive equal power, providing better traction and stability on the road.
The brand new Chevy 8.5" Ring & Pinion with a 3.73 Ratio is included in this package, enabling you to optimize your vehicle's acceleration and speed. The ring and pinion is one of the critical components of your vehicle's drivetrain, and this high-quality product is built to last, providing long-lasting performance.
Also included in this package is a brand new Chevy 8.5" Master Bearing/Installation Kit. This kit contains everything you need to install the new parts, including bearings, shims, seals, and other necessary hardware. The kit ensures that the installation process is easy and hassle-free.
- High-quality Yukon Dura-Grip (Clutch) Posi Unit with a 30 spline design for better performance and durability
- Brand new Chevy 8.5" Ring & Pinion with a 3.73 Ratio for optimized acceleration and speed
- Complete Chevy 8.5" Master Bearing/Installation Kit included for easy and hassle-free installation
2. Yukon Gear & Axle High Performance Ring & Pinion Gear Set For Gm 8.5/8.6 Differential (Yg Gm8.5-373)
The Yukon Ring and Pinion sets are the perfect choice for those who are looking for top-notch performance and quality. These gears are designed to withstand the harshest of conditions, whether on the street, off-road or at the track. The latest designs and manufacturing technologies are used to provide a quiet running gear that is strong and easy to set up.
The gear set is designed with an ABS provision on the pinion and is available in a 3.73 ratio. It has a ring gear diameter of 8.5 inches and 8.6 inches, with a 30 spline pinion and 10 ring gear bolts. It is specifically designed to fit GM 8.5-inch and 8.6-inch vehicles. All Yukon ring and pinion sets come with a standard one-year warranty.
If you're looking for a high-quality product that delivers unmatched performance, the Yukon Ring and Pinion sets are the ideal choice for you. With its exceptional design and cutting-edge technology, this gear set is the perfect upgrade for your vehicle.
- Designed to withstand harsh conditions
- Quiet running gear that is strong and easy to set up
- ABS provision on the pinion
- Comes with a standard one-year warranty
3. Gm Chevy 8.5" Chevy 10-Bolt Rearend Posi – 30 Spline, Gear, Bearing Kit Package – 4.10/4.11 Ratio
Upgrade your Chevy's performance with this brand new Yukon Dura-Grip (Clutch) Posi Unit, Ring & Pinion, and Master Bearing/Installation Kit. The unit features a 30 spline and fits the Chevy 8.5" differential. The Dura-Grip design provides excellent traction and handling, making it perfect for high-performance vehicles. The Ring & Pinion has a 4.10 / 4.11 gear ratio, which provides excellent acceleration and towing capabilities. The Master Bearing/Installation Kit ensures a perfect fit and easy installation.
The Yukon Dura-Grip Posi Unit is made from high-quality materials, ensuring durability and longevity. The Clutch design provides excellent traction in all conditions, making it perfect for off-road and racing applications. The Ring & Pinion is made from heat-treated steel, which provides excellent strength and durability. The Master Bearing/Installation Kit includes all the necessary components for a perfect fit and easy installation.
Overall, this package is an excellent choice for anyone looking to upgrade their Chevy's performance. It provides excellent traction, handling, and acceleration, making it perfect for high-performance vehicles. The package is also easy to install and comes with all the necessary components for a perfect fit.
- High-quality materials ensure durability and longevity
- Excellent traction and handling
- Perfect for high-performance vehicles
- Easy to install with included Master Bearing/Installation Kit
- Provides excellent acceleration and towing capabilities
4. Gm Chevy 8.2" Chevy 10-Bolt Rearend Posi, Gear, Bearing Kit Package – 3.73 Ratio
Upgrade your Chevy with this brand new Yukon Dura-Grip (Clutch) Posi Unit that comes with 28 Spline for better performance and handling. The clutch-style positraction provides smooth and reliable traction for your vehicle making it ideal for street, strip or off-road use. The 8.2" ring and pinion with 3.73 ratio also ensures optimal acceleration and power for your Chevy. The brand new master bearing and installation kit included in the package makes it easy to install and set up.
Constructed from high-quality materials, this Yukon Dura-Grip Posi Unit is built to last and withstand tough driving conditions. The clutch-style design provides predictable and consistent performance, ensuring that your Chevy can handle any challenge on the road. With 28 Spline, it will help you to get the most out of your vehicle.
The brand new Chevy 8.2" Ring & Pinion with 3.73 Ratio is designed to work seamlessly with the Yukon Dura-Grip Posi Unit. This combination provides the perfect balance of power and performance, allowing you to enjoy a smooth and reliable drive every time. The 3.73 ratio also ensures optimal acceleration and power for your Chevy, making it perfect for any driving condition.
To make the installation process easier, a brand new Chevy 8.2" Master Bearing/Installation Kit is included in the package. This kit contains all the necessary components to install and set up your new Yukon Dura-Grip Posi Unit and Ring & Pinion, ensuring a hassle-free and reliable installation process.
- High-quality materials ensure durability and longevity
- Clutch-style positraction provides smooth and reliable traction
- 28 Spline helps you to get the most out of your Chevy
- Ideal for street, strip or off-road use
- Perfect balance of power and performance
5. Grizzly Locker For Gm Axle.
The locker with 8620 steel internals is a reliable and durable option for storing personal belongings. The patented internal design of this locker reduces common locker failures, such as jamming and locking mechanism malfunctions. It is assembled in the USA, ensuring that the product meets high standards of quality and safety.
The 8620 steel used for the internals of this locker is a high-strength material that can withstand wear and tear. It is a great option for high-traffic areas, such as schools and gyms.
The locker's internal design includes a reinforced locking mechanism that provides extra security. The locker also features an easy-to-use handle that makes opening and closing the locker a breeze.
Additionally, the locker's hinges are made from rust-resistant materials, which means they will last longer and require less maintenance.
Overall, the locker with 8620 steel internals is a solid and reliable choice for anyone looking for a durable and secure storage solution.
- Patented internal design reduces common locker failures
- Assembled in the USA for high standards of quality and safety
- 8620 steel is a high-strength material that can withstand wear and tear
- Reinforced locking mechanism provides extra security
- Easy-to-use handle makes opening and closing the locker easy
- Hinges are made from rust-resistant materials for less maintenance
6. Gm Chevy 8.5" Chevy 10-Bolt Rearend Posi – 30 Spline, Gear, Bearing Kit Package – 3.42 Ratio
Upgrade your Chevy's differential with this brand new Yukon Dura-Grip (Clutch) Posi Unit, designed for 30 spline axles. The Dura-Grip Posi Unit delivers superior traction and performance, making it perfect for high-performance street and track applications. The clutch-style limited slip design ensures maximum torque transfer to both rear wheels, providing improved handling and stability on any surface.
This package also includes a brand new Chevy 8.5" Ring & Pinion, with a 3.42 gear ratio for optimal acceleration and fuel efficiency. The ring and pinion are precision-matched for perfect fit and performance, while the high-quality materials ensure long-lasting durability.
To make installation a breeze, this package also comes with a brand new Chevy 8.5" Master Bearing and Installation Kit. The kit includes all the necessary hardware and components to properly install the new differential and ring and pinion, ensuring a perfect fit and reliable performance.
Upgrade your Chevy's performance with confidence, knowing that you're getting top-quality components and superior performance with this brand new Yukon Dura-Grip Posi Unit, Ring & Pinion, and Master Bearing/Installation Kit package.
- Superior traction and performance for high-performance street and track applications
- Clutch-style limited slip design ensures maximum torque transfer to both rear wheels
- Precision-matched ring and pinion for perfect fit and performance
- High-quality materials ensure long-lasting durability
- Master Bearing/Installation Kit included for easy installation
7. Yukon Muscle Car Limited Slip & Re-Gear Kit For Gm 8.5”, 30 Spline, 4.11 Ratio, Ygk2339
Upgrade your GM 8.5" differential with this comprehensive kit that includes everything you need for installation. It fits a wide range of models, including '70 to '81 Firebird Trans Am, '70 to '77 GTO, and 25 other models, as well as any hot-rodded vehicle with a GM 8.5" diff.
The kit comes with a Dura Grip positraction LSD with a 28 spline and a 4.11 ratio. It also includes a 30 spline pinion gear and a 10 bolt ring gear, both of which are built to last. The 2.25" OD bearings provide exceptional durability and stability.
In addition to the positraction unit, ring and pinion gear set, and all required bearings, the kit also includes installation hardware to make the process as easy and hassle-free as possible.
Overall, this kit is an excellent choice for anyone looking to upgrade their GM 8.5" differential with high-quality components that will provide superior performance and reliability.
- Comprehensive kit includes everything needed for installation
- Fits a wide range of models, including hot-rodded vehicles
- Dura Grip positraction LSD provides excellent traction and stability
- High-quality components ensure superior performance and reliability
8. Yg High Performance Ring & Pinion Gear Set
Upgrade your vehicle's performance with the Ford 9.75" Rear 3.73 Ratio Ring and Pinion Set from Yukon. This premium gear set is designed and manufactured using the latest technologies to provide a strong, reliable and quiet running system that is easy to set up. It features a 2" diameter head bearing journal and is specifically designed for 2011 and newer models. Note that conversion bearings are required for '00-'10 applications. With this gear set, you can expect a smooth and reliable ride every time.
Yukon's Ford 9.75" Rear 3.73 Ratio Ring and Pinion Set is made from high-quality materials to ensure durability and longevity. It is designed to deliver improved performance and power to your vehicle, making it ideal for those who demand the best. The gear set is easy to install and provides a noticeable improvement in acceleration and overall driving experience. With its quiet running system, you can enjoy a comfortable and noise-free ride every time.
- Made using the latest technologies for a strong and reliable performance
- Easy to set up and install
- Provides improved acceleration and overall driving experience
- Quiet running system for a comfortable and noise-free ride
- – Conversion bearings required for '00-'10 applications
9. Mag Wheel Nuts – 200 Pack
The Carbon Steel Lug Nuts are made with materials that meet the SAE automotive industry standards for strength and durability, ensuring a long-lasting product. These lug nuts have been tested for corrosion resistance, undergoing 72-hour salt spray testing to simulate three years of corrosion resistance. Additionally, they have undergone industry-standard proof-load testing to ensure their strength. These lug nuts are backed by a team of professional engineers and quality control specialists in the United States, ensuring trustworthy quality. If any technical support is needed, Dorman's ASE Blue Seal Certified technical support team is available to provide any assistance.
- Meets SAE automotive industry standards for strength and durability
- Undergoes corrosion resistance testing
- Undergoes industry-standard proof-load testing
- Backed by a team of professional engineers and quality control specialists
- Technical support available from Dorman's ASE Blue Seal Certified team
10. Hot Rod 54" Rear End W/ Disc Brakes
Upgrade your street rod, hot rod, rat rod, or restoration project with the Currie Enterprises 9" Ford 54" Rear End with 31 Spline Axles and Currie Disc Brake Kit. This kit (Part # UHR54INX-K2) includes a Currie 9-Plus Round-Back Rear End with 31 Spline Axles (Currie # CE-UHR54INX) that has a performance axle package and a 9-Plus roundback housing. The overall width is 54", measured from outside-of-axle-flange to outside-of-axle-flange. The housing is built housing-centered with a 0.94" pinion offset and small webbed-style center that easily accepts triangulated 4-link brackets.
The rear ends are available in various lengths, including 53", 55", 56", 57", 58", 59", 60", and 61". The steel 3" diameter tubes support both 5 x 4 1/2" and 5 x 4 3/4" wheel bolt patterns. It includes one set of 7/16" studs and one set of 1/2" studs, 1/4" thick heavy-duty bearing retainer plates, and tapered Timken style wheel bearings pressed on. The axle flanges on this rear end are the Big Bearing Ford (New Style), also known as "Torino", which fit the Currie brakes perfectly.
The Currie 11" Disc Brake Kit (Currie Part # CE-6012E6) is also included in this kit. The brake kit has 0.50" thick x 11.00" O.D. solid rotors with hats, featuring both 5 x 4 1/2" and 5 x 4 3/4" bolt patterns. It also has single piston brake calipers with pads, backing plate/caliper mounting bracket plates with drum-style, parking brake assemblies installed, and necessary bolts, nuts, and registers to install the braking system on both rear wheels.
To complete the kit, the Currie Rear End comes with a parking brake cable kit that connects to the Currie Parking Brake Assemblies and then comes together to join the stock cable behind the transmission. The flexline kit has steel braided brake lines, banjo fittings and bolts, and chassis fittings to connect the calipers to the hard lines. It also includes weld-on line tabs to install on your rear end. The hard line kit has steel hard brake line tubing to connect the chassis fittings to the included rubber hose.
Upgrade your vehicle's rear end and braking system with this comprehensive kit from Currie Enterprises.
- Comprehensive kit includes a rear end with 31 spline axles and a disc brake kit
- Ideal for street rods, hot rods, rat rods, restorations, and numerous other projects
- Available in various lengths to fit different vehicles
- Steel 3" diameter tubes and heavy-duty bearing retainer plates provide durability
- Currie brakes fit perfectly with the rear end's axle flanges
- Includes parking brake cable kit, flexline kit, and hard line kit for complete installation
Best Rear End Gear Ratio For Street Racing FAQs
Can changing the rear end gear ratio improve acceleration or top speed in street racing?
Yes, changing the rear end gear ratio can indeed improve acceleration or top speed in street racing. The gear ratio determines the number of times the engine's output shaft rotates for each turn of the wheels. If the gear ratio is changed to a lower number, the engine will have more torque and the car will accelerate faster. On the other hand, if the gear ratio is changed to a higher number, the car will have a higher top speed but lower acceleration.
However, it's important to note that changing the gear ratio can also affect fuel efficiency, engine noise, and overall driving experience. It's always recommended to consult with a professional mechanic or tuner before making any changes to the gear ratio. Additionally, street racing is illegal and dangerous, and should never be attempted on public roads. It's important to prioritize safety and follow all traffic rules and regulations.
How do you determine the ideal rear end gear ratio for your street racing setup?
Determining the ideal rear end gear ratio for your street racing setup involves several factors that must be taken into consideration. The first factor is the type of race you intend to participate in, as the gear ratio that suits drag racing may not be the same for circuit racing or road racing. Secondly, your vehicle's engine and transmission must be evaluated to determine their power and torque output, which will influence the gear ratio you choose.
Another important factor is your tire size and type because they affect the overall gearing of your vehicle. If you have larger, grippier tires, you will require a lower gear ratio, while smaller tires will require a higher gear ratio. Additionally, the track or road conditions you will race in can also affect the gear ratio needed, as some tracks may have more corners, and others may have longer straights.
Overall, the ideal rear end gear ratio for street racing setup is a balance between acceleration and top speed, and finding this balance requires experience and experimentation. It's recommended to consult with an expert in the field, such as a professional mechanic or experienced racer, to assist you in making the best decision.
How does changing the rear end gear ratio affect street racing performance?
Changing the rear end gear ratio can significantly impact street racing performance. The gear ratio determines the number of revolutions the driveshaft makes for each revolution of the wheel, and a lower ratio means the wheel will turn more times for each revolution of the driveshaft. This results in greater acceleration but lower top speed, making it ideal for street racing where quick bursts of speed are important.
The impact of changing the gear ratio on performance will depend on the specific vehicle and its engine, as well as the type of racing being done. Generally, a lower gear ratio will improve acceleration and help the car get off the line quickly, but it will also increase engine RPMs and reduce fuel efficiency. On the other hand, a higher gear ratio will increase top speed but decrease acceleration.
It's important to note that changing the gear ratio is not the only factor that affects street racing performance. Factors like tire size, suspension, and aerodynamics can also play a significant role. Ultimately, finding the right gear ratio for a specific vehicle and racing situation requires careful consideration and testing.
What are the pros and cons of a higher or lower rear end gear ratio for street racing?
The rear end gear ratio is an important aspect to consider when it comes to street racing. A higher gear ratio provides more torque and acceleration, making it ideal for short, straight races. On the other hand, a lower gear ratio provides a higher top speed, making it ideal for longer races with fewer turns.
One of the major advantages of a higher gear ratio is the increased acceleration it provides. This is critical in street racing where every second counts. Additionally, a higher gear ratio can also improve fuel efficiency, as the engine is not forced to work as hard to reach higher speeds.
However, a higher gear ratio also has its disadvantages. It can put extra strain on the engine and transmission, leading to increased wear and tear. It can also cause the engine to run at higher RPMs, which can result in more noise and vibration in the car.
Conversely, a lower gear ratio can provide a higher top speed, making it ideal for longer races. It can also reduce engine and transmission strain, leading to a longer lifespan for these components. However, a lower gear ratio can also result in slower acceleration, which can put a driver at a disadvantage in shorter races.
Ultimately, the choice of a higher or lower rear end gear ratio for street racing depends on the specific needs of the driver and the type of race they will be participating in. It is important to weigh the pros and cons carefully before making a decision.
What rear end gear ratio is best for street racing?
The ideal rear end gear ratio for street racing depends on various factors, such as the type of vehicle, engine power, transmission, and tire size. Generally, a lower gear ratio, such as 3.73 or 4.10, is more suitable for street racing as it provides quicker acceleration and better low-end torque. However, a higher gear ratio, such as 3.23 or 3.55, offers better fuel efficiency and higher top speed, making it a better choice for highway driving.
It's essential to note that the gear ratio should be balanced with other components of the vehicle, such as the transmission and engine, to achieve optimal performance. Additionally, it's crucial to ensure that the gear ratio complies with local traffic regulations and doesn't exceed the speed limits.
Choosing the right rear end gear ratio requires careful consideration and consultation with an expert mechanic or tuner. They can help you select the best gear ratio for your specific vehicle and driving needs to ensure maximum performance and safety on the road.