Table of Contents
Building a street performance Camaro 350 small block engine is an exciting project that combines performance with reliability. Achieving 400 horsepower while ensuring daily drivability requires careful selection of parts. Below is a recommended part list that balances power and reliability, making your Camaro a thrilling yet dependable ride.
Engine Block and Components
- Engine Block: A 350 cubic inch small block, preferably a factory GM block for reliability.
- Crankshaft: A forged steel crankshaft for added strength and durability.
- Pistons: Forged aluminum pistons with a compression ratio around 9.5:1 to 10:1.
- Connecting Rods: Strong forged connecting rods that can handle the stress of high RPMs.
Performance Cylinder Heads
Choosing the right cylinder heads is crucial for maximizing airflow and performance. Look for heads that complement your camshaft and intake setup.
- Head Type: Aluminum heads for weight savings and better heat dissipation.
- Intake Ports: 190cc to 205cc intake ports for optimal airflow.
- Combustion Chamber: Around 64cc to maintain the desired compression ratio.
Camshaft Selection
The camshaft plays a pivotal role in defining the engine’s powerband and overall performance. A good street performance cam will provide strong torque and horsepower while maintaining drivability.
- Type: Hydraulic flat tappet or roller camshaft.
- Duration: Approximately 220-230 degrees at 0.050″ lift.
- Lift: Around 0.480″ to 0.500″ for optimal performance.
Intake and Fuel System
A well-designed intake system is essential for maximizing engine performance. Pairing the right intake with a suitable fuel system will ensure your engine runs smoothly and efficiently.
- Intake Manifold: A dual-plane intake manifold for improved low-end torque.
- Carburetor: A 650-750 CFM carburetor, depending on your specific setup.
- Fuel Pump: An electric fuel pump capable of supplying the necessary fuel volume and pressure.
- Fuel Injectors: If opting for EFI, consider high-flow injectors rated for your horsepower goals.
Exhaust System
The exhaust system affects not only sound but also performance. A free-flowing exhaust will help your engine breathe and perform better.
- Headers: Long-tube headers for maximum exhaust flow.
- Exhaust Pipes: 2.5″ or 3″ diameter pipes to reduce back pressure.
- Mufflers: Performance mufflers that provide a deep tone without excessive noise.
Ignition System
A reliable ignition system ensures your engine starts easily and runs smoothly. Proper timing and spark are critical for performance.
- Distributor: An HEI (High Energy Ignition) distributor for reliable spark delivery.
- Ignition Coil: A high-performance ignition coil to provide a strong spark.
- Spark Plugs: High-performance spark plugs with the right heat range for your setup.
Cooling System
Keeping your engine cool is essential for reliability. An efficient cooling system prevents overheating and maintains optimal operating temperatures.
- Radiator: A high-capacity aluminum radiator for better heat dissipation.
- Water Pump: A high-flow water pump to enhance coolant circulation.
- Thermostat: A 180-degree thermostat for optimal engine temperature.
Transmission and Drivetrain
The transmission and drivetrain components must match the engine’s output to ensure smooth power delivery and reliability.
- Transmission: A 700R4 or TH350 automatic transmission for versatility.
- Torque Converter: A converter with a stall speed suitable for your camshaft.
- Rear End: A 10-bolt or 12-bolt rear end with a gear ratio of 3.73:1 for a balance of acceleration and cruising.
Final Considerations
Building a street performance Camaro 350 small block engine requires careful planning and quality parts. By following this recommended part list, you can achieve 400 horsepower while ensuring daily reliability. Always consider your driving style and preferences when making choices, and don’t hesitate to consult with performance experts if needed.
Happy building, and enjoy your powerful yet reliable Camaro!