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The RX-7 has long been a favorite among car enthusiasts, especially those who appreciate the balance of performance and weight. With the increasing popularity of engine swaps, particularly the LS engine swap, many are looking to convert their RX-7s for enhanced power and reliability. This article will break down the costs associated with building a 500 HP RX-7 LS swap using quality parts while maintaining a budget-friendly approach.
Understanding the LS Engine Swap
The LS engine series, known for its robust performance and aftermarket support, is a popular choice for swaps. The lightweight design and high horsepower potential make it an ideal candidate for the RX-7. However, before diving into the costs, it’s essential to understand what the swap entails.
- Engine selection
- Transmission choice
- Mounting solutions
- Wiring harness and ECU
- Cooling system upgrades
- Exhaust system modifications
Cost Breakdown
Below is a detailed breakdown of the estimated costs associated with each component necessary for a successful LS swap in an RX-7.
1. LS Engine
The heart of the swap is, of course, the LS engine itself. Depending on the specific model and condition, prices can vary significantly.
- Used LS1 Engine: $2,000 – $3,000
- Used LS3 Engine: $4,000 – $6,000
- Rebuilt LS Engine: $3,500 – $5,000
2. Transmission
The choice of transmission can also affect performance and cost. A manual transmission is often preferred for performance builds.
- T56 Manual Transmission: $2,000 – $3,000
- 4L60E Automatic Transmission: $1,500 – $2,500
3. Engine Mounts and Accessories
Proper engine mounts are crucial for a successful swap, ensuring the engine is securely positioned in the engine bay.
- LS Swap Engine Mounts: $200 – $500
- Transmission Crossmember: $100 – $300
4. Wiring Harness and ECU
A custom wiring harness and ECU are necessary for the LS engine to communicate with the RX-7’s systems.
- Custom Wiring Harness: $500 – $1,000
- ECU (Standalone or Factory): $300 – $800
5. Cooling System
Upgrading the cooling system is vital for maintaining optimal engine temperatures, especially with increased horsepower.
- Radiator: $200 – $500
- Fans: $100 – $300
6. Exhaust System
A proper exhaust system is essential for performance and sound. Custom fabrication may be required.
- Headers: $300 – $700
- Custom Exhaust: $500 – $1,000
Additional Costs
In addition to the primary components, there are other costs to consider when budgeting for an LS swap.
- Fuel System Upgrades: $300 – $600
- Suspension Upgrades: $500 – $1,500
- Braking System Upgrades: $500 – $1,200
- Labor Costs (if applicable): $1,000 – $3,000
Total Estimated Cost
Summarizing the costs provides a clearer picture of the total investment required for a quality LS swap.
- Low-End Estimate: $6,000 – $10,000
- Mid-Range Estimate: $10,000 – $15,000
- High-End Estimate: $15,000 – $25,000
Conclusion
Building a 500 HP RX-7 LS swap can be an exciting and rewarding project. By carefully selecting quality parts and being mindful of costs, it is possible to achieve a powerful and reliable vehicle without breaking the bank. Whether you choose to do the swap yourself or enlist professional help, thorough planning and budgeting will ensure a successful outcome.