The Basics of 862 LS Heads
When it comes to LS engines, the 862 cylinder heads are a popular choice among enthusiasts. These heads are commonly found on 4.8L and 5.3L LS engines, and they offer a great balance between performance and affordability.
Features and Specifications
The 862 heads have a smaller combustion chamber compared to other LS heads, resulting in a higher compression ratio. They also feature smaller intake ports and valves, which can improve low-end torque and throttle response. However, this can limit the top-end power potential of the engine.
Benefits of 862 LS Heads
One of the main advantages of the 862 heads is their affordability. Since they are commonly found on lower-displacement LS engines, they are more readily available and often come at a lower price compared to other heads. They also offer good performance gains over the stock heads, making them a popular choice for budget builds or street applications.
Performance Upgrades
If you're looking to maximize the potential of your 862 heads, there are several upgrades you can consider:
Porting and Polishing
Porting and polishing the intake and exhaust ports can significantly improve airflow and performance. This modification is best left to professionals who have experience working with LS heads.
Upgraded Valvetrain
Installing stronger valve springs, aftermarket valves, and roller rockers can enhance the durability and performance of your 862 heads. These upgrades allow for higher lift camshafts and increased RPM potential.
Installation Tips
When installing 862 heads, it's important to follow these tips:
Proper Gasket Selection
Ensure you choose the correct head gasket to match the bore size and thickness of your engine. This will prevent any leaks and ensure proper sealing.
Torque Specifications
Follow the manufacturer's recommended torque specifications when tightening the head bolts. This will ensure proper clamping force and prevent any head gasket issues in the future.
Conclusion
The 862 LS heads offer a cost-effective solution for enthusiasts looking to improve their LS engine's performance. With the right upgrades and installation techniques, these heads can deliver impressive results. Whether you're building a budget-friendly street machine or looking for an affordable upgrade, the 862 heads are worth considering.
