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When it comes to building high-performance engines, both LS and HEMI platforms have their devoted fans. Achieving over 600 horsepower requires careful selection of supporting modifications. This article explores the best supporting mod upgrades for LS and HEMI builds, focusing on ARP and MSD components that can help you reach your power goals.
Understanding the LS and HEMI Platforms
The LS engine, originating from General Motors, has gained immense popularity due to its lightweight design and performance potential. Conversely, the HEMI engine, known for its distinctive hemispherical combustion chambers, has a rich history and is favored in the Mopar community. Both platforms have unique strengths, and understanding their characteristics is crucial for building a powerful engine.
Key Components for Power Upgrades
To achieve the coveted 600+ horsepower mark, several components are essential. Upgrading these parts ensures reliability and performance in high-stress situations.
- High-Performance Camshaft
- Upgraded Fuel System
- High-Flow Intake and Exhaust
- ECU Tuning
- ARP Fasteners
- MSD Ignition Components
High-Performance Camshaft
A camshaft upgrade is one of the most impactful modifications for both LS and HEMI engines. A performance camshaft improves airflow and increases the engine’s power band, providing a significant boost in horsepower. Choose a camshaft that matches your power goals and driving style.
Upgraded Fuel System
With increased horsepower, the fuel system must be capable of delivering the necessary fuel volume and pressure. Consider upgrading to larger fuel injectors and a high-flow fuel pump to ensure your engine receives adequate fuel supply under high load conditions.
High-Flow Intake and Exhaust
Improving airflow into and out of the engine is critical for achieving high horsepower. A high-flow intake manifold and performance headers can significantly enhance engine breathing. Pair these upgrades with a quality exhaust system to maximize power gains.
ECU Tuning
After making significant upgrades, proper ECU tuning is essential. A custom tune optimizes fuel maps, ignition timing, and other parameters to ensure that the engine runs efficiently and reliably at higher power levels.
The Role of ARP Fasteners
ARP (Automotive Racing Products) fasteners are renowned for their strength and reliability. When building high-performance engines, using ARP fasteners is crucial to withstand the increased stress and pressure. Key areas to consider upgrading with ARP fasteners include:
- Head bolts
- Connecting rod bolts
- Main studs
Head Bolts
Upgrading to ARP head bolts ensures a secure seal between the cylinder head and the engine block, which is vital for maintaining compression and preventing leaks under high power conditions.
Connecting Rod Bolts
ARP connecting rod bolts provide the strength needed to handle the increased forces during high RPM operation. Upgrading these bolts helps prevent rod failure, which can be catastrophic in high-performance builds.
Main Studs
Main studs from ARP offer superior clamping force compared to factory bolts. This upgrade is essential for ensuring the integrity of the bottom end, especially in high-horsepower applications.
MSD Ignition Components
MSD (Multiple Spark Discharge) ignition components are designed to improve ignition performance and reliability. Upgrading to MSD ignition systems can help optimize spark delivery, which is crucial for high-performance builds.
- MSD Ignition Box
- High-Performance Coil Packs
- Performance Spark Plugs
MSD Ignition Box
An MSD ignition box enhances spark energy and allows for adjustable RPM limits and timing curves. This flexibility is invaluable for tuning your engine to perform at its best.
High-Performance Coil Packs
Upgrading to MSD high-performance coil packs ensures that the ignition system delivers a stronger spark, which is essential for optimal combustion, especially in modified engines.
Performance Spark Plugs
Choosing the right spark plugs can make a significant difference in engine performance. MSD performance spark plugs are designed to handle higher temperatures and pressures, making them ideal for high-horsepower applications.
Conclusion
Achieving 600+ horsepower in LS and HEMI builds requires careful consideration of supporting modifications. Upgrading components such as camshafts, fuel systems, and ignition systems, along with utilizing ARP and MSD products, can help you reach your performance goals. By investing in quality parts and tuning, you can unleash the full potential of your engine.