LSJ Modular Pulley System 2.7-Inch

The ZZP LSJ Modular Pulley System offers a performance upgrade for 3.8L (3800) engines equipped with an M90 supercharger. This black, 2.7-inch pulley, part number ZZ-6LSJMP-2.7-BLK, is designed to allow for precise adjustment of the supercharger's drive ratio, thereby controlling boost pressure. The system includes the modular hub and the pulley itself, providing a direct solution for enthusiasts seeking to increase their vehicle's performance. ZZPerformance has engineered Ecotec-specific pulleys, enabling operation down to 2.7 inches without snout machining. However, due to variations in snout casting and machining, they guarantee performance down to 2.8 inches without modification. The recommended pulley sizes vary based on octane rating and other modifications, with the 2.7" pulley specifically suggested for Stage 3 kits that include 60# injectors, a dual-pass end plate, header/downpipe, and Stage 1+ cams. This modular pulley system is compatible with a range of GM vehicles featuring the 3800 supercharged engine, such as the Grand Prix GTP and Monte Carlo SS. Installation is described as straightforward with the proper tools. ZZPerformance also provides a recommended modification list and resources for further engine upgrades.