Best Transmission Options for Rx-7 Ls Swaps: T56 Vst56 Magnum

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The RX-7 is a legendary sports car known for its lightweight chassis and exceptional handling. When it comes to enhancing its performance through an LS swap, one of the most critical components to consider is the transmission. This article will explore the best transmission options for RX-7 LS swaps, focusing on the T56 and T56 Magnum transmissions.

Overview of the RX-7 LS Swap

The LS engine swap into the RX-7 has become increasingly popular due to the engine’s power potential, reliability, and aftermarket support. However, selecting the right transmission is essential for maximizing performance and ensuring a smooth driving experience.

Why Choose the T56 Transmission?

The T56 transmission is a six-speed manual transmission originally designed for high-performance applications. It has become a favorite among car enthusiasts due to its strength and versatility.

  • Strength: The T56 is built to handle high torque levels, making it suitable for LS engines.
  • Gear Ratios: Offers a wide range of gear ratios for optimized performance on the street and track.
  • Aftermarket Support: Extensive aftermarket support for upgrades and modifications.

T56 Specifications

The T56 transmission has specific specifications that make it an attractive option for RX-7 LS swaps:

  • Weight: Approximately 130 lbs.
  • Torque Rating: Capable of handling up to 700 lb-ft of torque.
  • Shifter Location: Rear shifter location for better compatibility with RX-7 chassis.

T56 Magnum: An Upgraded Alternative

The T56 Magnum is an upgraded version of the standard T56, designed to handle even more power and provide enhanced performance features. It is an excellent choice for those looking for additional durability and capabilities.

  • Improved Torque Capacity: Designed to handle up to 1000 lb-ft of torque.
  • Better Gear Ratios: Offers improved gear ratios for better acceleration and top speed.
  • Enhanced Durability: Features upgraded components for increased reliability under heavy loads.

T56 Magnum Specifications

Here are some key specifications of the T56 Magnum:

  • Weight: Approximately 145 lbs.
  • Torque Rating: Capable of handling up to 1000 lb-ft of torque.
  • Shifter Location: Rear shifter location, compatible with RX-7 setups.

Comparing T56 and T56 Magnum

When deciding between the T56 and T56 Magnum for an RX-7 LS swap, it’s essential to consider various factors, including power goals, budget, and intended use of the vehicle.

  • Power Handling: The T56 Magnum offers superior torque capacity, making it ideal for high-powered builds.
  • Cost: The standard T56 is generally less expensive than the Magnum version.
  • Weight: The T56 is lighter, which may benefit handling and performance.

Installation Considerations

Installing either transmission requires careful planning and consideration to ensure compatibility with the RX-7 chassis. Here are some key points to keep in mind:

  • Bellhousing: Ensure the correct bellhousing is used for the LS engine and transmission combination.
  • Driveshaft: Modifications to the driveshaft may be necessary to accommodate the new transmission.
  • Crossmember: A custom crossmember may be required for proper fitment.

Conclusion

Both the T56 and T56 Magnum are excellent transmission options for RX-7 LS swaps, each offering unique advantages. The choice ultimately depends on your power goals, budget, and intended use of the vehicle. With the right transmission, you can significantly enhance the performance and driving experience of your RX-7.