CP Piston Bullet Race Series Chevy 409Ci 4.165 Bore 1.125 Ch 14.3:1 Cr - Set Of 8

If you're building a high-performance Chevy 409ci engine for serious racing or street/strip use, a robust set of pistons is crucial. These CP Pistons Bullet Race Series pistons are forged from high-strength aluminum alloy, designed to handle the extreme pressures and temperatures found in a powerful V8. They feature a 4.165-inch bore and a 14.3:1 compression ratio, making them ideal for naturally aspirated builds aiming for maximum power output.

The Bullet Race Series is CP Pistons' popular line for demanding applications. These pistons are crafted using advanced forging techniques that create a dense, strong grain structure, far more durable than cast pistons. The 1.125-inch compression height is a key measurement that dictates the piston's position in the cylinder at Top Dead Center, working in conjunction with your connecting rods and crankshaft to achieve the target compression ratio. This set includes eight pistons, rings, wrist pins, and locks, providing a complete package for your engine rebuild.

When installing these pistons, pay close attention to the manufacturer's recommended clearances and lubrication. Achieving the correct 14.3:1 compression ratio requires careful selection of cylinder heads, head gasket thickness, and camshaft specifications. These pistons are intended for competition use and are not CARB approved, meaning they cannot be legally shipped to California. Ensure your build plans align with these specifications for optimal performance and legality.