Manley Chevrolet LS Piston Set - 4.005in Bore 1.304in CH, -18.00 CC

If you're building a high-performance Chevrolet LS engine, this Manley Performance Piston Set is a solid choice. These pistons are designed for a 4.005-inch bore and feature an 18.00cc dish, making them suitable for specific compression ratio targets in your build. Manley is a well-known name among professional engine builders for a reason – their parts are built to handle serious work.

What sets these pistons apart is the material and construction. They're forged from domestic 2618 alloy, which is known for its strength and ability to withstand high temperatures and pressures without deforming. This is crucial for performance applications where stock cast pistons might fail. The pistons also feature proven cam and barrel skirt profiles, which help them run smoothly against the cylinder walls, reducing wear and noise while still generating power. Manley also pays close attention to the details, like the exacting standards for ring lands and grooves. This ensures a tight seal with your piston rings, which is key for maximizing compression and preventing blow-by, ultimately leading to more power.

This set includes premium chrome moly wrist pins, which are strong and durable. For those looking for even more robustness, Manley offers upgrades to 9310 and Turbo Tuff/DLC alloys on select part numbers. The unique fixturing Manley uses allows them to machine the skirt and ring grooves in one operation, ensuring they are perfectly square to each other. This attention to detail contributes to overall engine reliability and performance. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.