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The Toyota IS300 is a popular choice for enthusiasts looking to swap in the legendary 2JZ-GTE engine. This powerhouse can easily handle over 700 horsepower with the right upgrades. In this article, we will explore the best transmission and drivetrain upgrades to support your high-performance goals while ensuring reliability and optimal handling.
Why Upgrade the Transmission and Drivetrain?
When swapping a 2JZ-GTE into an IS300, the stock transmission and drivetrain components may not be sufficient to handle the increased power and torque. Upgrading these components is crucial for:
- Improved power delivery
- Enhanced reliability
- Better handling and traction
- Increased driving enjoyment
Transmission Upgrades
One of the most critical upgrades for a 2JZ-GTE swapped IS300 is the transmission. Here are some of the best options:
1. Getrag V160 Transmission
The Getrag V160 is a six-speed manual transmission that was originally used in the Toyota Supra MK4. It is known for its strength and ability to handle high horsepower applications. Key features include:
- High torque capacity
- Direct fit for 2JZ-GTE
- Shorter gear ratios for better acceleration
2. W58 Transmission
If you are looking for a more budget-friendly option, the W58 transmission can be a viable choice. While it is not as robust as the V160, it can handle moderate power levels with the right modifications. Consider the following:
- Cost-effective upgrade
- Lightweight design
- Suitable for lower horsepower builds
3. Automatic Transmission Options
If you prefer an automatic transmission, consider the A340E or A341E. These transmissions are capable of handling high power levels with the right modifications. Benefits include:
- Ease of driving in traffic
- Potential for faster shift times with aftermarket controllers
- Good for drag racing applications
Drivetrain Upgrades
Upgrading the drivetrain is just as important as the transmission. Here are some essential upgrades to consider:
1. Differential Upgrades
The stock IS300 differential may not handle the power of a 2JZ-GTE effectively. Upgrading to a stronger differential is crucial for performance. Options include:
- Toyota Supra LSD (Limited Slip Differential)
- Aftermarket options like the Kaaz or OS Giken LSD
- Higher gear ratios for better acceleration
2. Driveshaft Upgrades
A high-performance driveshaft is essential for transferring power from the transmission to the wheels. Consider upgrading to a:
- Aluminum driveshaft for weight savings
- Carbon fiber driveshaft for increased strength
- Custom-length driveshaft to fit your setup
3. Axle Upgrades
To handle the increased power and torque, upgrading your axles is a must. Look for:
- Aftermarket axles rated for high horsepower
- Reinforced CV joints for better durability
- Direct fit options for ease of installation
Supporting Modifications
In addition to the transmission and drivetrain upgrades, consider these supporting modifications to maximize performance:
1. Engine Management System
A quality engine management system is critical for tuning your 2JZ-GTE to its full potential. Options include:
- AEM Infinity
- Haltech Elite
- MoTeC M1
2. Upgraded Fuel System
To support high horsepower, an upgraded fuel system is necessary. This includes:
- High-flow fuel pump
- Upgraded fuel injectors
- Fuel pressure regulator
3. Cooling System Enhancements
High horsepower engines generate a lot of heat. Enhancing your cooling system will help maintain optimal temperatures. Consider:
- Upgraded radiator
- Oil cooler
- Intercooler upgrades
Conclusion
Upgrading the transmission and drivetrain of a 2JZ-GTE swapped IS300 is essential for handling 700+ horsepower effectively. By investing in quality components, you can ensure your vehicle remains reliable, enjoyable, and capable of harnessing the full potential of this legendary engine. Whether you choose a manual or automatic transmission, and which drivetrain components you select, make sure they align with your performance goals and driving style.