CP Piston Set for Buick Gr Natl 3.8L - Bore (3.820) Stroke (3.400) Rod (5.960) Set of 6 (No Rings)

If you're rebuilding the engine in your Buick Grand National and looking for a solid set of pistons, this forged set from CP Pistons is a strong option. These pistons are built for the 3.8L V6 engine, featuring a 3.820-inch bore, a 3.400-inch stroke, and a 5.960-inch rod length. This set includes six pistons, ready to be paired with your chosen rings and connecting rods for a complete engine build.

CP Pistons are well-known for their robust construction, and this set is no exception. Forged from high-strength aluminum alloy, these pistons are designed to handle the increased cylinder pressures and temperatures that come with performance engine builds. The specific dimensions are critical for achieving the correct compression ratio and ensuring proper piston-to-wall clearance, which is essential for engine longevity and performance. This set is designed as a direct replacement for the stock bore size, making installation more straightforward when paired with the correct machining work on your engine block.

When undertaking a performance engine build like this, it's important to ensure all components are compatible and properly installed. This piston set does not include piston rings, so you'll need to source those separately to match your desired ring gap and application. Always consult with your machine shop and follow manufacturer guidelines for proper installation, including piston-to-wall clearance and ring end gap specifications. Please note that this part is not CARB approved and cannot be shipped to California.