Table of Contents
The LS engine swap has become a popular choice among automotive enthusiasts, especially for those looking to enhance the performance of their Z cars. With a target of 550 horsepower, it’s crucial to ensure that both the fuel system and suspension are adequately upgraded to handle the increased power. This article will provide essential tips and recommendations for upgrading these systems to maximize performance and safety.
Upgrading the Fuel System
A robust fuel system is essential for any high-performance engine. When swapping an LS engine into a Z car, consider the following upgrades to ensure optimal fuel delivery.
- Fuel Pump: Upgrade to a high-flow fuel pump capable of delivering the required fuel volume for 550 hp. Look for pumps rated at least 255 LPH or higher.
- Fuel Injectors: Install larger fuel injectors to match the engine’s demand. Aim for injectors in the range of 60-80 lb/hr.
- Fuel Lines: Replace stock fuel lines with larger diameter lines (AN-6 or AN-8) to reduce fuel pressure drop.
- Fuel Pressure Regulator: Use an adjustable regulator to maintain optimal fuel pressure under varying conditions.
- Fuel Filter: Incorporate a high-flow fuel filter to protect the injectors from debris.
Enhancing the Suspension
With increased horsepower comes the need for improved handling and stability. Upgrading the suspension system is vital for ensuring your Z car can handle the power effectively.
- Coilover Suspension: Install adjustable coilovers for better ride quality and handling. Look for setups that allow for height and damping adjustments.
- Upgraded Sway Bars: Stiffer sway bars will reduce body roll and improve cornering performance.
- Performance Bushings: Replace rubber bushings with polyurethane or solid bushings for increased responsiveness.
- Camber Kits: Install camber kits to allow for alignment adjustments, improving tire contact during cornering.
- Strut Braces: Adding front and rear strut braces can enhance chassis rigidity, leading to better handling.
Choosing the Right Tires
Your choice of tires can significantly impact the performance of your LS-swapped Z car. Ensure that you select tires that can grip the power being delivered to the ground.
- Performance Tires: Opt for high-performance tires designed for better traction and handling at higher speeds.
- Tire Size: Choose wider tires to increase the contact patch and improve grip.
- Temperature Rating: Consider tires with a suitable temperature range to ensure optimal performance during spirited driving.
Braking System Upgrades
With increased power and speed, your Z car’s braking system must also be upgraded to ensure safety and performance.
- Big Brake Kits: Consider installing a big brake kit that includes larger rotors and calipers for improved stopping power.
- High-Performance Brake Pads: Upgrade to performance brake pads that can withstand higher temperatures and provide better grip.
- Stainless Steel Brake Lines: Replace stock brake lines with stainless steel lines for improved pedal feel and reduced expansion.
- Brake Fluid: Use high-temperature brake fluid to prevent brake fade during aggressive driving.
Final Thoughts
Upgrading the fuel system and suspension of your LS-swapped Z car is essential for achieving the desired performance and handling. By investing in quality components and ensuring proper installation, you can enjoy a thrilling driving experience that maximizes the potential of your 550-hp engine. Remember, safety and performance go hand in hand, so prioritize upgrades that enhance both aspects.