Optimize ignition timing precision for GM HEI systems with this advance curve kit featuring vacuum advance compatibility. Measuring 15.5 cm in length, it ensures a perfect fit and reliable performance. Enhance engine efficiency and responsiveness with proven Mr Gasket engineering.

Optimize your engine's timing precision with this vacuum advance curve kit designed specifically for GM/Delco '69 on points distributors. Measuring 14.5 cm in length, it ensures a perfect fit to restore accurate ignition advance curves. Discover how to enhance your ignition system’s responsiveness and fuel efficiency.