GM HEI Distributor Tune Up Kit Black Cap

The PROFORM GM HEI Distributor Tune Up Kit Black Cap is a comprehensive OEM-style maintenance package designed for General Motors HEI (High Energy Ignition) distributor systems. This complete tune-up kit supplies all the internal and external wear components needed to restore original performance and reliability to aging or rebuilt distributors used in classic muscle cars, street rods, and vintage GM powerplants.

The kit includes a replacement distributor cap, ignition coil, rotor, dust cover, vacuum advance mechanism, ignition module, and all required fasteners and hardware. Each component meets GM HEI specifications and is engineered to work seamlessly within the HEI distributor housing. The black cap finish provides a factory-correct appearance while resisting corrosion and UV degradation. The vacuum advance component ensures proper timing advance under varying engine loads, critical for drivability and fuel economy on carbureted and early fuel-injected engines. The ignition module handles the high-voltage switching that powers the coil and fires the spark plugs with the precision timing that HEI systems are known for.

This kit is essential for anyone restoring, rebuilding, or performing a major tune-up on a classic or vintage GM engine equipped with an HEI distributor. Rather than sourcing individual components from multiple suppliers, the tune-up kit consolidates all necessary replacement parts in one package, reducing downtime and ensuring component compatibility. It's ideal for engine rebuilds, storage preparation, or addressing hard-starting, misfiring, or rough idle conditions caused by worn distributor internals or deteriorated ignition components.