8.2BOP4S PONTIAC Posi Bolt Unit Gto Lemans

Review PONTIAC 8.2 3.36 Posi Bolt Series Unit for LEMANS GTO 1964–2010

The Pontiac 8.2 BOP4S rear end is a high-performance differential assembly that was originally used in various Pontiac muscle cars from the 1964 to 1965 model years. This specific differential unit is identified by its part number 8.2 BOP4S and comes with a 3.36:1 posi (positive traction) gear ratio. The "BOP" designation stands for "Borg-Warner Twin Gear Limited Slip Differential," indicating that this unit features a limited-slip differential mechanism to provide improved traction and stability during cornering and acceleration.

The 8.2 BOP4S differential housing is made of heavy-duty cast iron to ensure durability and strength. It is designed to fit Pontiac GTO and Lemans models with a 10-bolt rear end configuration. The unit's 10-bolt design provides additional strength and rigidity, making it well-suited for high-performance applications.

The 3.36:1 gear ratio is an ideal choice for muscle cars that are used for both street and occasional track use. It offers a good balance between acceleration and cruising comfort, providing ample power to launch the car from a standstill and maintain a steady cruising speed on the highway.

The limited-slip differential mechanism in the 8.2 BOP4S unit uses clutches to transmit engine power to both wheels during normal driving conditions. However, when one wheel begins to slip, the clutches engage to transfer power to the wheel with better traction, ensuring that power is put to the ground effectively. This results in improved grip, stability, and overall handling performance.

The 8.2 BOP4S differential comes fully assembled and ready to install. It includes all necessary seals, bearings, and other components required for a complete installation. Additionally, it is compatible with various drivetrain configurations, such as straight axle or I-beam rear suspensions, making it a versatile choice for Pontiac muscle car enthusiasts.

In summary, the Pontiac 8.2 BOP4S rear end is a high-performance differential assembly that delivers improved traction, stability, and handling to 1964-1965 Pontiac GTO and Lemans models with a 10-bolt rear end configuration. Its heavy-duty cast iron housing, 3.36:1 posi gear ratio, and limited-slip differential mechanism make it a popular choice among muscle car enthusiasts looking to enhance the performance of their classic Pontiacs.

The Pontiac 8.2 BOP4S 1965-1964 64-65 8.2 GTO Lemans 3.36 Posi 10-bolt unit is a classic automotive component, known for its power and performance. Here are some pros and cons of buying this transmission:

1. Power: The 8.2 BOP4S transmission is capable of handling high horsepower and torque, making it a popular choice for muscle car enthusiasts looking to upgrade their vehicles.

2. Durability: This transmission is built to last, with heavy-duty components and a robust design that can handle the demands of high-performance driving.

3. Versatility: The 8.2 BOP4S transmission can be used in a variety of applications, including hot rods, restorations, and performance builds.

4. Availability: This transmission is relatively common and widely available on the aftermarket, making it easier to find and purchase.

5. Strong Aftermarket Support: There is a large community of enthusiasts and aftermarket suppliers who offer upgrades, parts, and services for the 8.2 BOP4S transmission.

1. Cost: The 8.2 BOP4S transmission can be expensive to purchase and install, especially if you're looking for a high-performance version or if you need to pay for professional installation.

2. Complexity: This transmission is not for the faint of heart, as it requires specialized knowledge and tools to install and maintain.

3. Weight: The 8.2 BOP4S transmission is heavier than some other transmissions, which can impact fuel economy and handling.

4. Compatibility: This transmission may not be compatible with all vehicles or engine setups, so it's important to do your research before making a purchase.

5. Maintenance: The 8.2 BOP4S transmission requires regular maintenance, including frequent oil changes and regular inspections to ensure optimal performance.

The Pontiac 8.2 BOP4S 1965-1964 64-65 8.2 GTO Lemans 3.36 Posi 10-bolt unit is a high-performance transmission that offers power, durability, and versatility. However, it comes with a higher cost, complexity, and weight compared to other transmissions. If you're a muscle car enthusiast looking for a powerful and reliable transmission for your project, the 8.2 BOP4S may be worth the investment. However, it's important to do your research, ensure compatibility, and be prepared for the maintenance requirements.

If you're considering purchasing the Pontiac 8.2 BOP4S transmission, it's recommended that you work with a professional mechanic or transmission specialist to ensure proper installation and maintenance. Additionally, be sure to research the specific model and year of your vehicle to ensure compatibility and to find the best aftermarket deals and upgrades. Finally, consider the cost-benefit analysis of upgrading to this transmission and weigh the pros and cons carefully before making a purchase.

Details:

1965 1964 64 65 8.2 Gto Pontiac Lemans 3.36 3:55 posi 10 bolt 3 series posi unit ,used unit condition unknown.

specifications differentialsdepo:

• for models: Gto, Lemans
• for years: 1964–2010
• brand: Pontiac
• mpn: 8.2bop4s
• part type: Bolt Unit
• service years: 1964-72
• non-domestic product: No
• unit size: 8.2
• fitment type: Direct Replacement
• ratio: 3.36 3.55 3.73 3.90 4.33 4.56 4.88 Etc.
• placement on vehicle: Rear
• axle retention type: Bolt In Axles
• gear ratio: 3.36 5.13
• pinion spline count: 27
• differential type: Limited-slip
• axle spline count: 28

payments differentialsdepo:

• cash
• credit card: visa
• other
• wallet: google-pay

seller differentialsdepo:

• city: westfield, massachusetts
• rating: 98.5%
• # reviews: 19486

shipping differentialsdepo:

• carrier: ups
• class: standard
• type: calculated
• service: ups ground
• transit: 3-8 days

returns differentialsdepo:

• time: 30 days
• paid by: seller
• policy: returns accepted

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

offer differentialsdepo:

• sold #: 23
• price: $493.00
• item condition: New
• started: february 19, 2025
• options: ship-to-home
• in stock #: 1
• availability: in stock