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The RX-7 is a beloved sports car known for its lightweight design and rotary engine. However, many enthusiasts are turning to the LS engine swap as a powerful alternative. This article provides a detailed cost breakdown for a complete RX-7 LS swap project, budgeting between $15,000 and $25,000.
Understanding the LS Swap
The LS engine swap involves replacing the factory rotary engine with a V8 LS engine, which offers more power and reliability. This conversion requires careful planning and budgeting to ensure a successful project.
Key Components of the LS Swap
- LS Engine
- Transmission
- Engine Mounts
- Wiring Harness
- Exhaust System
- Cooling System
- Fuel System
- Driveshaft
- Miscellaneous Parts
Cost Breakdown
1. LS Engine
The heart of the swap is the LS engine itself. Depending on the model and condition, prices can vary significantly.
- Used LS Engine: $3,000 – $5,000
- New LS Engine: $7,000 – $10,000
2. Transmission
The transmission is crucial for handling the power of the LS engine. Common choices include the T56 and 4L60E.
- Used Transmission: $1,500 – $2,500
- New Transmission: $3,000 – $4,000
3. Engine Mounts
Custom engine mounts are necessary for securing the LS engine in the RX-7’s engine bay.
- Engine Mount Kit: $300 – $600
4. Wiring Harness
A wiring harness is essential for connecting the engine to the vehicle’s electrical system.
- Wiring Harness: $500 – $1,000
5. Exhaust System
A custom exhaust system is needed to fit the new engine while maximizing performance.
- Exhaust System: $800 – $1,500
6. Cooling System
An upgraded cooling system is necessary to keep the LS engine at optimal temperatures.
- Radiator and Fans: $400 – $800
7. Fuel System
The fuel system must be upgraded to handle the increased demands of the LS engine.
- Fuel Pump and Injectors: $500 – $1,000
8. Driveshaft
A custom driveshaft is required to connect the transmission to the rear differential.
- Driveshaft: $400 – $800
9. Miscellaneous Parts
Additional parts and tools will be necessary for the swap, including fluids, sensors, and hardware.
- Miscellaneous: $1,000 – $2,000
Labor Costs
If you are not performing the swap yourself, labor costs can add significantly to the budget.
- Labor: $1,500 – $3,000
Total Estimated Cost
Based on the components and labor outlined above, the total estimated cost for an RX-7 LS swap can range from $15,000 to $25,000, depending on choices made throughout the project.
Conclusion
Embarking on an RX-7 LS swap project can be an exciting and rewarding experience. With careful budgeting and planning, enthusiasts can enjoy the benefits of increased power and performance while preserving the spirit of this iconic vehicle.