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The 396 big block engine is a classic powerhouse that has been a favorite among car enthusiasts for decades. Upgrading to aluminum heads can significantly enhance performance, reduce weight, and improve overall efficiency. In this guide, we will explore the costs, power gains, and installation process associated with upgrading your 396 big block to aluminum heads.
Benefits of Upgrading to Aluminum Heads
Aluminum heads offer several advantages over their cast iron counterparts. Here are some key benefits:
- Weight Reduction: Aluminum heads are significantly lighter, which can improve handling and performance.
- Improved Heat Dissipation: Aluminum conducts heat better, reducing the risk of overheating.
- Increased Power: Upgrading to aluminum heads can lead to substantial horsepower gains.
- Enhanced Fuel Efficiency: Better airflow can improve combustion efficiency, leading to better fuel economy.
Cost of Upgrading to Aluminum Heads
The cost of upgrading to aluminum heads can vary based on several factors, including the brand, specifications, and whether you choose to do the installation yourself or hire a professional. Here’s a breakdown of the potential costs:
- Aluminum Heads: Prices typically range from $1,000 to $3,000, depending on the manufacturer and features.
- Additional Components: You may need to purchase new gaskets, bolts, and other related parts, which can add another $200 to $500.
- Labor Costs: If you opt for professional installation, expect to pay between $500 and $1,500 for labor, depending on the shop’s rates and the complexity of the job.
Power Gains from Aluminum Heads
One of the most exciting aspects of upgrading to aluminum heads is the potential for increased power. Here are some factors that influence power gains:
- Airflow Improvements: Aluminum heads often feature better port designs, allowing for more air to enter the engine.
- Compression Ratio: Higher compression ratios can lead to more power, and aluminum heads can help achieve this.
- Camshaft Compatibility: Upgrading your camshaft alongside the heads can maximize power gains.
Installation Guide for Aluminum Heads
Installing aluminum heads on your 396 big block can be a rewarding project. Here’s a step-by-step guide to help you through the process:
- Gather Tools and Parts: Ensure you have all necessary tools, including a torque wrench, socket set, and any new gaskets or bolts.
- Remove Old Heads: Drain the coolant and remove the intake manifold. Disconnect the exhaust and intake components, then unbolt the old heads.
- Prepare the Engine Block: Clean the surface of the engine block to ensure a good seal with the new heads.
- Install New Heads: Place the new aluminum heads onto the block, aligning them with the dowel pins. Install new head bolts and torque them to the manufacturer’s specifications.
- Reassemble Components: Reattach the intake manifold, exhaust components, and any other parts you removed during the process.
- Check for Leaks: After installation, start the engine and check for any leaks. Monitor the engine temperature to ensure everything is functioning correctly.
Conclusion
Upgrading your 396 big block to aluminum heads is a fantastic way to enhance performance and efficiency. While the initial costs can be significant, the benefits in terms of power and weight savings make it a worthwhile investment for any serious car enthusiast. With proper installation and tuning, you can unlock the full potential of your big block engine.