Key Features: The 72300 Advance Curve Kit optimizes ignition timing curves through an adjustable centrifugal advance mechanism, enhancing engine power, responsiveness, and fuel efficiency while eliminating timing instability.
Wide Compatibility: Exclusively designed for GM High Energy Ignition (HEI) distributors used in most V6/V8 engines since 1974. Directly compatible with Chevrolet, Buick, Cadillac, GMC, Pontiac and other brand models, no extra modification needed for direct installation.
3-Set Adjustable Ignition Advance Curve: Equipped with 3 groups of advance springs in different stiffness (Fast/Ultra-Fast/Extreme-Fast) to freely adjust the speed and timing of spark advance. Precisely match the ignition needs of engines with different displacements, compression ratios and modified working conditions, achieving full spark advance at the optimal RPM range for better power output.
Premium Materials: The 72300 Advanced Curve Kit is crafted from premium materials, offering high strength, heat resistance, aging resistance, wear resistance, lasting elasticity, and fatigue resistance to Ensure long-term reliability in demanding engine environments.
Complete Upgrade Kit: The package includes all necessary components for HEI distributor centrifugal advance mechanism upgrade: precision centrifugal weights, anti-offset center plate, 3 sets of advance springs, advance limit bushings. No need to purchase additional parts, the installation steps are clear and easy to follow, suitable for both professional modification and personal maintenance.
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