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When it comes to performance upgrades in the automotive world, few modifications can have as significant an impact as a camshaft upgrade. This is especially true when comparing two of the most popular engine platforms in the performance community: the LS and the HEMI. In this article, we will explore how a Stage 2 cam upgrade can affect the power figures of both LS and HEMI engines, and what enthusiasts can expect from these modifications.
Understanding Camshaft Upgrades
A camshaft plays a crucial role in the engine’s performance by controlling the timing and duration of the valve openings. Upgrading to a Stage 2 camshaft typically means a more aggressive profile, which can improve airflow and increase horsepower and torque. However, the effects of such an upgrade can vary significantly between different engine architectures, such as the LS and HEMI.
LS Engine Overview
The LS engine family, developed by General Motors, is known for its lightweight design and robust performance potential. These engines are popular among enthusiasts due to their ability to handle significant power increases with relatively simple modifications.
Stage 2 Cam Upgrades for LS Engines
A Stage 2 cam upgrade for LS engines typically features increased lift and duration compared to stock camshafts. This allows for greater airflow, which can lead to substantial power gains. Enthusiasts often report improvements in both horsepower and torque, particularly in the mid to upper RPM range.
HEMI Engine Overview
The HEMI engine, known for its distinctive hemispherical combustion chamber design, offers a different approach to performance. While HEMIs are powerful engines, their aftermarket support and tuning options have historically lagged behind that of LS engines.
Stage 2 Cam Upgrades for HEMI Engines
Upgrading to a Stage 2 camshaft in a HEMI engine can also yield significant performance improvements. Similar to LS upgrades, a Stage 2 cam for HEMI engines will enhance valve timing and lift, allowing for better airflow. However, the actual power gains can differ due to the engine’s unique characteristics and tuning requirements.
Comparative Power Gains
When comparing the power gains from a Stage 2 cam upgrade between LS and HEMI engines, several factors come into play:
- Engine Architecture: The LS engine’s design allows for more straightforward modifications and tuning, often resulting in higher power gains.
- Aftermarket Support: The LS platform has a more extensive range of aftermarket parts and tuning options available, contributing to greater performance potential.
- Tuning Complexity: HEMI engines may require more complex tuning solutions, which can affect the overall power gains from a cam upgrade.
Real-World Power Figures
While individual results can vary based on specific builds and modifications, here are some general power figures that enthusiasts can expect from Stage 2 cam upgrades:
- LS Engines: A Stage 2 cam upgrade can yield power gains of 30-50 horsepower and 20-30 lb-ft of torque, depending on the supporting modifications and tuning.
- HEMI Engines: A Stage 2 cam upgrade for HEMI engines typically results in power gains of 20-40 horsepower and 15-25 lb-ft of torque, again depending on the overall setup.
Factors Influencing Performance Gains
Several factors can influence the performance gains from a Stage 2 cam upgrade:
- Supporting Modifications: Upgrades such as headers, intake systems, and exhaust modifications can significantly enhance the effectiveness of a cam upgrade.
- Tuning: Proper tuning is essential to maximize the benefits of a cam upgrade. A professional tune can help optimize fuel delivery and ignition timing.
- Engine Condition: The overall health of the engine can affect performance gains. A well-maintained engine will respond better to upgrades.
Conclusion
In summary, a Stage 2 cam upgrade can provide significant performance gains for both LS and HEMI engines, though the extent of those gains may vary. LS engines generally benefit from a more extensive aftermarket and simpler tuning solutions, often resulting in higher power figures. HEMI engines can also see substantial improvements, but enthusiasts should be aware of the additional tuning complexities involved.
Ultimately, the choice between LS and HEMI engines will depend on individual preferences and goals. Regardless of the platform, a Stage 2 cam upgrade is a powerful tool for enthusiasts looking to enhance their engine’s performance.