706 LS HEADS - content

706 LS Heads: A Comprehensive Guide

The 706 LS heads, often referred to as “706 castings,” are a popular choice for LS engine builds. These cylinder heads are known for their robust design and potential for significant performance gains, making them a favored option for enthusiasts and professionals alike. However, understanding their specifications and applications is crucial for successful implementation.

What are 706 LS Heads?

706 LS heads are a specific casting number identifying a type of cylinder head used on various General Motors LS-series engines. They are characterized by their relatively large combustion chamber volume compared to some other LS heads, which impacts their performance characteristics and suitability for different applications. The design incorporates features aimed at optimizing airflow and combustion efficiency, resulting in a balance of power and torque potential. 700 a m pst

Performance Characteristics of 706 LS Heads

The larger combustion chamber volume of the 706 LS heads generally leads to a slightly lower compression ratio compared to heads with smaller chambers. This can be advantageous in applications where higher-octane fuel is less readily available or where a broader torque curve is desired. 702 sw 8th st bentonville arus While they might not offer the peak power of some other LS heads at extremely high RPMs, they usually deliver strong torque across a wider range, making them suitable for street vehicles and applications that prioritize drivability.

Applications and Modifications

706 LS heads are versatile and can be used in a range of LS engine builds, from naturally aspirated applications to those using forced induction such as turbochargers or superchargers. Their inherent strength makes them a good foundation for high-performance modifications. 70k jobs Common modifications include porting and polishing to further enhance airflow, valve spring upgrades for higher RPM operation, and the addition of aftermarket rocker arms for improved valve train control. These modifications, when done correctly, can significantly improve the power output and efficiency.

Comparing 706 LS Heads to Other LS Heads

The 706 heads are often compared to other LS castings like the 243 and 799 heads. Each has its own strengths and weaknesses depending on the intended application. For example, the 243 heads often excel in higher RPM applications, while the 799 heads are known for their impressive torque potential. 713 wins anon ib The 706 heads offer a middle ground, providing a balance between power and torque, making them a popular all-around choice for many builds. Careful consideration of engine goals and the specific characteristics of each casting is crucial for optimal performance.

Choosing the Right LS Heads for Your Build

The suitability of 706 LS heads depends heavily on the overall goals of your engine build. Factors such as desired power output, engine displacement, intended use (street, drag racing, off-road), and budget all play a role. It is always recommended to consult with experienced engine builders and thoroughly research the specific needs of your project before selecting cylinder heads. A proper understanding of engine dynamics is crucial for maximizing the potential of the 706 or any other LS head.

Frequently Asked Questions

Q1: Are 706 LS heads good for a naturally aspirated build? Yes, they are a good choice offering a broad torque curve.

Q2: Can I use 706 heads on a supercharged LS engine? Yes, but appropriate modifications and tuning will be crucial.

Q3: What is the typical compression ratio with 706 LS heads? It varies based on the piston and block combination, but it's generally lower compared to some other LS heads.

Q4: Are 706 LS heads better than 243 LS heads? It depends on the intended application. 243 heads typically excel at higher RPMs.

Q5: Where can I find more information about LS engine heads? You can find more details on LS Engine types and specifications.

Summary

706 LS heads represent a solid option for a variety of LS engine builds, offering a balance between power and torque. While their larger combustion chamber leads to a slightly lower compression ratio compared to other options, their robust design and suitability for modification make them a popular choice for both street and performance applications. Understanding their characteristics and carefully considering your build goals are crucial to maximizing their potential.