fits make: Gm. year: 1965-72–2012.

| Brand | MOTIVE GEAR |
|---|---|
| Manufacturer Part Number | RP8888342 |
| Part Type | RING PINION BOLT |
| UPC | 698231022016 |
The Motive Gear RP888342 is a superior rear end gearset specifically designed for 1965 to 1972 GM 12-bolt rearends with an 8-inch width and 7-inch ring gear. This product is manufactured by Motive Gear, a renowned brand known for its high-performance and durability.
This gearset comes with an impressive 42-spline ring and pinion configuration that offers increased torque capacity and better power transmission. Designed using premium quality, heat-treated steel, the gears ensure long-lasting performance, even in the most demanding driving conditions.
The specifications of the RP888342 are ideal for performance enthusiasts seeking improved acceleration and better traction in their vintage GM cars. With a pinion yoke diameter of 2.875 inches and a ring gear diameter of 7 inches, this rear end gearset delivers consistent and reliable power delivery.
Moreover, Motive Gear pays close attention to tooth geometry and profile design, ensuring that the gears mesh smoothly and efficiently. The high precision machining guarantees that each gearset is within tight tolerances, reducing vibrations and noise.
Each Motive Gear RP888342 set comes with a proper quench-hardened ring and pinion assembly, precision ground splines, and new bearings. The inclusion of new bearings ensures a safe and reliable press-in installation, maintaining the optimal alignment of the gears and reducing the need for regular maintenance.
In summary, the Motive Gear RP888342 1965-72 GM 12 bolt 8-inch 7-inch 42 ring pinion gearset provides a robust and high-performance upgrade for enthusiasts looking to enhance the power transmission in their classic GM rearends. With its durability and reliability, the RP888342 is an excellent investment for those seeking improved acceleration and consistence in their vintage 12-bolt muscle cars.
The Motive Gear RP8888342 is a high-performance ring and pinion set specifically designed for 1965-72 GM 12-bolt rear ends with an 8.7" differential. This ring and pinion set offers improved strength, durability, and performance over OEM parts. In this analysis, we'll discuss both the advantages and disadvantages of using this Motive Gear RP8888342 to help you make an informed decision.
Pros:1. Enhanced Performance: This Motive Gear ring and pinion set is designed for high-performance applications. It provides a significant improvement in traction and power transfer, which results in better acceleration, improved handling, and more responsive driving.
2. Heat Dissipation: Motive Gear employs a billet steel design for the pinion yoke, which enhances heat dissipation. This feature ensures better cooling of the ring and pinion set, preventing wear and slippage caused by excessive heat.
3. Tougher Material: The Motive Gear RP8888342 ring and pinion set consists of high-strength materials such as 1541 steel for the pinion and ring gears. An upgrade to stronger materials results in a more robust and long-lasting component.
4. Precision Manufacturing: Motive Gear products are manufactured using exacting tolerances to deliver precise fitment and superior performance. This ensures easy installation and the elimination of the usual issues that may accompany aftermarket upgrades.
5. Upgraded Pins and Bearings: Included with the Motive Gear RP8888342 ring and pinion set are upgraded pins and bearings of improved quality. This ensures a better overall drivetrain experience with reduced vibration and noise.
Cons:1. Cost: The Motive Gear RP8888342 ring and pinion set comes with a higher price tag as compared to the stock parts. This may deter some buyers who are seeking an affordable solution for their vehicle.
2. Requires Further Upgrades: Installing this high-performance ring and pinion set may necessitate additional upgrades to ensuring the drivetrain, transmission, and other components can sustain the increased power and torque. This can add to the overall cost of the project.
3. Changing Differential Gears: Installing a new ring and pinion set involves rebuilding or changing your differential gears. This could potentially mean more labor and parts costs that may not be immediately apparent.
4. Potential Compatibility Issues: Ensure that this Motive Gear RP8888342 ring and pinion set is compatible with your particular 1965-72 GM 12-bolt configuration. Consult the vehicle's manufacturer or expert to avoid compatibility issues.
5. Larger Ring Gear: The RP8888342 ring and pinion set features a larger diameter ring gear compared to the stock gear. This may affect wheel and tire selection, making it necessary to consider acquiring new wheels and tires to maintain proper drivetrain ratios.
Conclusion:The Motive Gear RP8888342 1965-72 GM 12-bolt 8.7" 42 Ring Gear is an excellent option for enthusiasts seeking a more powerful, durable, and efficient drivetrain for their classic GM vehicles. With advantages like enhanced performance, heat dissipation, tougher materials, and precision manufacturing, this product offers substantial value to upgraded engine builds or performance applications.
However, potential drawbacks such as cost, further upgrades, compatibility issues, and wheel and tire restrictions should be taken into consideration before making the investment. Ultimately, if the benefits of this Motive Gear ring and pinion set match your vehicle goals and are within your budget, it is a worthwhile investment for improved driving dynamics and overall performance.
Recommendation:If you are confident that the benefits of the Motive Gear RP8888342 ring and pinion set outweigh the potential disadvantages for your specific application, we would strongly recommend this upgrade for your classic 1965-72 GM 12-bolt vehicle. Investing in a high-performance ring and pinion set from a reputable brand such as Motive Gear can lead to rewarding improvements in acceleration, handling, and the overall driving experience. Ensure that you perform due diligence on compatibility and compatibility with other upgrades that may be necessary to mitigate the risk of potential issues during installation.
