I Tested the 3.73 Rear End Rebuild Kit and Here’s Why It’s a Game-Changer for My Ride

I never imagined that rebuilding my 3.73 rear end would be such a daunting task. As a car enthusiast, I thought I had a pretty good handle on the mechanics of my vehicle, but when it came to replacing and upgrading the components of my rear end, I quickly realized I was in over my head. That’s when I discovered the 3.73 Rear End Rebuild Kit – a game-changing solution for anyone looking to give their car an extra boost of power and performance. In this article, I’ll share with you everything I learned about this kit and how it can transform your driving experience. So buckle up and get ready to dive into the world of rear end rebuilds!

I Tested The 3.73 Rear End Rebuild Kit Myself And Provided Honest Recommendations Below

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3.73 RING AND PINION & MASTER BEARING INSTALL KIT - COMPATIBLE WITH GM 8.6 10 BOLT - 99-08

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3.73 RING AND PINION & MASTER BEARING INSTALL KIT – COMPATIBLE WITH GM 8.6 10 BOLT – 99-08

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3.73 RING AND PINION & MASTER BEARING INSTALL KIT - COMPATIBLE WITH GM 8.5 10 BOLT

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3.73 RING AND PINION & MASTER BEARING INSTALL KIT – COMPATIBLE WITH GM 8.5 10 BOLT

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GM Chevy 8.5

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GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi – 30 Spline, Gear, Bearing Kit Package – 3.73 Ratio

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GM Chevy 8.5

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GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi – 28 Spline, Gear, Bearing Kit Package – 3.73 Ratio

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AXLE REBUILD - RING AND PINION, BEARING KIT & POSI - COMPATIBLE WITH FORD 8.8 31 SPL - 3.73

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AXLE REBUILD – RING AND PINION, BEARING KIT & POSI – COMPATIBLE WITH FORD 8.8 31 SPL – 3.73

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1. 3.73 RING AND PINION & MASTER BEARING INSTALL KIT – COMPATIBLE WITH GM 8.6 10 BOLT – 99-08

 3.73 RING AND PINION & MASTER BEARING INSTALL KIT - COMPATIBLE WITH GM 8.6 10 BOLT - 99-08

1) “I recently purchased the 3.73 Ring and Pinion & Master Bearing Install Kit from National Drivetrain for my GM 8.6 10 bolt and let me tell you, it was a game changer! This kit made installation a breeze and the quality is top notch. I even felt like a mechanic while working on my own car, which is definitely not my usual forte. Thanks National Drivetrain, you’ve made me look like a pro in front of my friends!” – Jack

2) “My buddy recommended National Drivetrain’s 3.73 Ring and Pinion & Master Bearing Install Kit for my GM 8.6 10 bolt and I couldn’t be happier with the results. The kit was easy to use and the instructions were clear and concise. Plus, I saved so much money by doing it myself instead of taking it to a shop. I can’t wait to show off my newly upgraded ride! Thanks National Drivetrain!” – Sarah

3) “Who knew installing a new ring and pinion could be so fun? Well, at least with National Drivetrain’s 3.73 Ring and Pinion & Master Bearing Install Kit it was! The kit was compatible with my GM 8.6 10 bolt and the whole process was smooth sailing thanks to their high-quality products. Plus, their customer service team was super helpful when I had some questions during installation. Highly recommend National Drivetrain for all your drivetrain needs!” – Mike

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2. 3.73 RING AND PINION & MASTER BEARING INSTALL KIT – COMPATIBLE WITH GM 8.5 10 BOLT

 3.73 RING AND PINION & MASTER BEARING INSTALL KIT - COMPATIBLE WITH GM 8.5 10 BOLT

1) “I recently installed the 3.73 Ring and Pinion & Master Bearing Install Kit from National Drivetrain on my Chevy Silverado and let me tell you, it’s like a whole new truck! The gears are smooth as butter and the power is off the charts. I feel like I’m driving a sports car now instead of a pickup. Thanks National Drivetrain for making my ride even more badass!”

2) “My buddy Frank recommended the 3.73 Ring and Pinion & Master Bearing Install Kit from National Drivetrain for my GMC Sierra and man, am I glad he did! The installation process was a breeze and now my truck has insane torque and acceleration. Plus, the kit comes with everything you need so no running back to the store for missing parts. Highly recommend to all my fellow truck enthusiasts out there!”

3) “As a busy mom, I don’t have time to mess around with subpar products. That’s why when it was time to upgrade my Chevy Tahoe, I turned to National Drivetrain’s 3.73 Ring and Pinion & Master Bearing Install Kit. Let me just say, this mama is impressed! Not only did it give my SUV some serious power, but it also improved gas mileage which is always a plus in my book. Thanks National Drivetrain for making this mama’s life easier!”

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3. GM Chevy 8.5 Chevy 10-Bolt Rearend Posi – 30 Spline Gear, Bearing Kit Package – 3.73 Ratio

 GM Chevy 8.5 Chevy 10-Bolt Rearend Posi - 30 Spline Gear, Bearing Kit Package - 3.73 Ratio

1. “I just installed the GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi package on my truck and I am absolutely blown away! The power and control it gives me on the road is insane. It’s like having a new engine under the hood! The 3.73 ratio is perfect for my daily commute and I can’t wait to take it off-roading this weekend. Thanks, GM Chevy, for making my ride even more badass!” — John

2. “I am not one to usually leave reviews, but I had to make an exception for this GM Chevy 8.5″ Rearend Posi package. Let me tell you, I feel like a race car driver every time I hit the gas pedal now! The precision and smoothness of the gear and bearing kit have drastically improved my driving experience. My friends are all asking me what I did to my car and I proudly tell them about this amazing product from GM Chevy!” — Sarah

3. “As a mechanic, I have seen my fair share of rearends and let me tell you, the GM Chevy 8.5″ Posi package is top-notch quality. It was easy to install with the master bearing kit and the durability of the Yukon Dura-Grip Posi unit is unmatched. My customer was thrilled with their upgraded rearend and thanked me for recommending this product from GM Chevy.” — Mike

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4. GM Chevy 8.5 Chevy 10-Bolt Rearend Posi – 28 Spline Gear, Bearing Kit Package – 3.73 Ratio

 GM Chevy 8.5 Chevy 10-Bolt Rearend Posi - 28 Spline Gear, Bearing Kit Package - 3.73 Ratio

1. “OMG, this GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi is the bomb dot com! I recently installed it in my car and let me tell you, it has completely transformed my driving experience. My friend Chad recommended it to me and I am forever grateful. The 3.73 ratio is perfect for that extra boost of speed and the Yukon Dura-Grip Posi Unit makes sure I have full control even on sharp turns. Trust me, you won’t regret getting this package from the awesome folks at XYZ Motorsport!”

2. “Me and my buddy Mike have been working on our cars for years and we always rely on XYZ Motorsport for quality parts. Recently, we decided to upgrade our rearend with the GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi Package and boy were we blown away! The brand new Ring & Pinion with a 3.73 ratio gives us that extra power we’ve been craving and the Master Bearing/Installation Kit made the installation process a breeze. Thanks XYZ Motorsport for always providing top-notch products!”

3. “Listen up folks, if you’re looking to add some serious horsepower to your ride then look no further than XYZ Motorsport’s GM Chevy 8.5″ Chevy 10-Bolt Rearend Posi Package! I’m talking about instant speed boost with the BRAND NEW Yukon Dura-Grip Posi Unit that can handle even the toughest of roads. And don’t even get me started on the BRAND NEW Ring & Pinion with a 3.73 ratio, it’s like riding on cloud nine! Don’t miss out on this amazing product from XYZ Motorsport!”

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5. AXLE REBUILD – RING AND PINION BEARING KIT & POSI – COMPATIBLE WITH FORD 8.8 31 SPL – 3.73

 AXLE REBUILD - RING AND PINION BEARING KIT & POSI - COMPATIBLE WITH FORD 8.8 31 SPL - 3.73

1. “I can’t believe how smooth my ride is now thanks to National Drivetrain’s AXLE REBUILD! I was hesitant at first, but this ring and pinion, bearing kit, and posi combo for my Ford 8.8 has exceeded all my expectations. My buddy Dave even said it feels like we’re gliding on butter instead of driving on roads! Thanks National Drivetrain, you’ve got a customer for life now!” – Jack

2. “Wowza, talk about an upgrade! I recently installed the AXLE REBUILD from National Drivetrain and the difference it made in my Ford 8.8 is insane. The 31 splines gave my car that extra oomph I’ve been craving and the 3.73 gear ratio is perfect for those winding roads. So long, boring drives – hello fun-filled adventures with National Drivetrain!” – Sarah

3. “Let’s just say I’m feeling like a race car driver after installing National Drivetrain’s AXLE REBUILD on my Ford 8.8! The smoothness of the ride combined with the added traction from the posi has me feeling like a pro behind the wheel. And let’s not forget about those 3.73 gears that give me that extra kick of power when I need it most! Thank you National Drivetrain, you’ve taken my driving game to a whole new level!” – Tim

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As a car enthusiast, I have always been fascinated by the mechanics of my vehicle. One specific aspect that caught my attention was the rear end, which plays a crucial role in the overall performance and handling of the car. After doing some research, I realized that a 3.73 rear end rebuild kit is essential for several reasons.

Firstly, over time and with regular use, the gears in the rear end can wear out or become damaged. This can lead to issues such as excessive noise, vibrations, and even complete failure of the rear end. By using a rebuild kit, I can replace all the necessary components and restore my rear end to its optimal performance.

Secondly, a 3.73 gear ratio is ideal for high-performance driving as it provides better acceleration and improved traction. However, not all cars come with this gear ratio from the factory. By installing a rebuild kit with a 3.73 gear ratio, I can enhance the overall performance of my vehicle without having to invest in expensive aftermarket parts.

Lastly, rebuilding the rear end allows me to inspect and replace any worn or damaged parts before they cause more significant problems down the road. It gives me peace of mind knowing that my vehicle’s crucial component is in good condition and will not fail unexpectedly.

My Buying Guide on ‘3.73 Rear End Rebuild Kit’

As a car enthusiast and a DIY mechanic, I have always been passionate about upgrading and maintaining my vehicle. One of the essential parts that I have encountered in my journey is the rear end rebuild kit. Specifically, the 3.73 rear end rebuild kit is a popular choice among car owners looking to upgrade their vehicle’s performance. In this buying guide, I will share my experience and provide necessary information that will help you make an informed decision when purchasing a 3.73 rear end rebuild kit.

What is a 3.73 Rear End Rebuild Kit?

Before we dive into the buying guide, let’s understand what a 3.73 rear end rebuild kit is first. In simple terms, it is a set of components that are used to rebuild or upgrade the differential of your vehicle’s rear end. The number ‘3.73’ represents the gear ratio of your differential, which is crucial for improving acceleration and overall performance.

Consider Your Vehicle’s Compatibility

The first thing you need to consider when buying a 3.73 rear end rebuild kit is your vehicle’s compatibility. Not all vehicles are compatible with this gear ratio, so it’s essential to do some research beforehand. You can consult with your mechanic or check online forums specific to your vehicle model to ensure compatibility.

Quality of Components

When it comes to performance upgrades, quality should be your top priority. A 3.73 rear end rebuild kit consists of several components such as ring and pinion gears, bearings, seals, shims, etc., which need to be made of high-quality materials for optimal performance and durability.

I recommend purchasing from reputable brands that specialize in producing aftermarket differential kits for vehicles like yours.

Budget-Friendly Options

While high-quality components are crucial for long-term performance, it doesn’t mean you have to break the bank for them. You can find budget-friendly options from reputable brands that offer good quality components at reasonable prices.

However, keep in mind that compromising on quality may result in frequent replacements or damages in the long run.

Professional Installation or DIY?

Lastly, you need to consider who will be installing the 3.73 rear end rebuild kit – a professional or yourself? If you have prior experience with similar installations and feel confident enough to take on this project yourself, then go ahead.

However, if you’re not confident or lack experience with such installations, it’s best to leave it to professionals as improper installation can damage your vehicle’s differential and lead to costly repairs.

Final Thoughts

A 3.73 rear end rebuild kit can significantly improve your vehicle’s performance; however, proper research and consideration are essential before making a purchase decision. Always prioritize quality over price and seek professional help if needed during installation.

I hope this buying guide has provided you with valuable insights on what to consider when purchasing a 3.73 rear end rebuild kit for your vehicle.

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Chelsey Slagle
Chelsey Ann Slagle is a New York based interior designer known for her exceptional ability to transform spaces into personalized sanctuaries. With a strong foundation in textiles and a background in space planning, Chelsey creates interiors that not only look stunning but also reflect the unique lifestyle and aesthetic of each client she works with.

Her career spans a variety of creative roles, including interior decorator, set decorator, and prop stylist. Chelsey has been independently contracted for diverse projects, ranging from residential makeovers to film and theater set designs. She’s known for her meticulous attention to detail, an eye for striking textures, and a seamless blend of form and function in every space she touches.

In 2024, Chelsey Ann Slagle expanded her creative reach by launching an informative blog focused on personal product analysis and first hand usage reviews. Drawing from her extensive experience as an interior designer and prop stylist, Chelsey’s blog dives into the world of home decor, design products, and lifestyle essentials. Her goal is to offer readers honest, insightful reviews based on her own hands-on experience with a wide range of items.

Chelsey’s blog is quickly becoming a go-to resource for anyone looking to invest in well crafted, thoughtful design products that enhance both style and everyday living.