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The Nissan 240SX has long been a favorite among car enthusiasts, especially for those looking to modify their vehicles for better performance. One of the most popular modifications is the LS engine swap. This article compares the stock 240SX with the LS swapped version, focusing on power gains and drivetrain improvements.
Overview of the Nissan 240SX
The Nissan 240SX, produced from 1989 to 1998, is known for its lightweight chassis and rear-wheel-drive layout. It was available with either a naturally aspirated or turbocharged engine, making it a versatile platform for modifications.
Stock 240SX Performance
The stock 240SX typically comes with the KA24DE engine, a 2.4-liter inline-four that produces around 155 horsepower and 160 lb-ft of torque. While this performance is adequate for daily driving, many enthusiasts find it lacking for spirited driving or racing.
Power and Torque Figures
Here are the key specifications for the stock 240SX:
- Engine: KA24DE, 2.4L I4
- Horsepower: ~155 hp
- Torque: ~160 lb-ft
LS Swap Overview
The LS engine swap involves replacing the stock KA24DE engine with a General Motors LS series V8 engine. This modification offers significant power gains and improved performance characteristics.
Benefits of an LS Swap
Swapping to an LS engine provides several advantages:
- Increased horsepower and torque
- Better aftermarket support and parts availability
- Improved weight distribution
- Enhanced reliability and durability
Power Gains from LS Swap
The LS engines, depending on the variant, can produce anywhere from 300 to over 600 horsepower. This represents a substantial increase over the stock engine.
Common LS Engine Options
Here are some popular LS engine options for swapping into a 240SX:
- LS1: ~350 hp, ~365 lb-ft
- LS3: ~430 hp, ~425 lb-ft
- LS7: ~505 hp, ~470 lb-ft
Drivetrain Improvements
In addition to power gains, an LS swap often necessitates upgrades to the drivetrain to handle the increased power and torque. This includes the transmission, differential, and driveshaft.
Transmission Options
Common transmission options for LS swapped 240SXs include:
- T56 6-speed manual
- 4L60E automatic
- TH400 automatic
Differential Upgrades
Upgrading the differential is crucial for handling the power from an LS engine. Popular choices include:
- Welded differential for drift applications
- Limited-slip differential for better traction
Driveshaft Considerations
With the added power, a stronger driveshaft is often required to prevent failures. Many opt for:
- Aluminum driveshaft for weight savings
- Steel driveshaft for added strength
Cost Considerations
While the performance gains from an LS swap are significant, it is essential to consider the costs involved. The total cost can vary widely based on the engine choice, parts, and labor.
Estimated Costs
Here is a breakdown of potential costs:
- LS Engine: $2,500 – $10,000
- Transmission: $1,000 – $3,000
- Wiring harness and ECU: $500 – $1,500
- Labor: $1,500 – $3,000
Conclusion
In conclusion, swapping an LS engine into a Nissan 240SX offers substantial power gains and numerous drivetrain improvements. While the stock 240SX provides a solid foundation, the LS swap transforms it into a high-performance machine capable of competing in various motorsport disciplines.
For enthusiasts considering this modification, understanding the costs and benefits is crucial to making an informed decision. The LS swapped 240SX not only enhances performance but also opens up a world of possibilities for customization and tuning.