EP-4M Ready-to-Run Distributor for Chevrolet SBC BBC V8 (Complete Electronic Ignition)

The EP-4M is a complete Ready-to-Run electronic distributor for the Chevrolet small block and big block V8 — the most widely fitted engine family in American automotive history. Ready-to-Run distributors represent the ideal upgrade path for vehicles running worn-out points ignition or for builders who prefer a compact distributor with an external coil rather than the larger self-contained HEI unit. The EP-4M replaces the contact breaker points with a maintenance-free magnetic pickup, eliminating the regular dwell angle checks and points replacements that characterized classic Chevy ignition maintenance.

Inside the EP-4M, a high-output electronic ignition module processes the magnetic pickup signal and triggers the external coil with a clean, consistent signal across the full RPM range. The adjustable mechanical advance mechanism allows precise timing curve customization for different camshaft profiles and compression ratios, while the vacuum advance canister improves part-throttle fuel economy — a combination that makes the EP-4M equally suitable for daily-driven street cars and dedicated performance builds. The oversized steel distributor shaft runs in a top-mounted sealed ball bearing and an extra-long sintered steel bushing, maintaining precise rotor-to-cap terminal alignment at sustained high RPM.

EP manufactures the EP-4M under ISO 9001:2015 quality management with individual testing for magnetic pickup signal strength, module switching function, and mechanical advance travel before shipment. Available in red, blue, and black cap configurations to coordinate with any underhood color scheme. Two-wire installation: connect a switched +12V feed and the coil negative trigger wire and the engine is ready to run.

Every EP Ready-to-Run distributor is manufactured under ISO 9001:2015 certified quality management. Each unit is individually tested for magnetic pickup signal strength, electronic module switching function, mechanical advance travel range, and vacuum advance response before shipment. CE-EMC electromagnetic compatibility certification, UL listing, and UKCA conformity mark ensure full compliance across all major global export markets.

EP (Ever-Power) has been manufacturing automotive ignition distributors since 1999, exporting 80% of production to aftermarket distributors across North America, Europe, Australia, and Southeast Asia. Our Ready-to-Run series covers every major classic American and Australian V8 platform -- Chevrolet, Ford, Chrysler/Dodge, and Holden -- in a single compact distributor family that upgrades worn-out points ignition to modern electronic performance without changing the engine bay's external coil setup.

ISO 9001:2015 quality management, CE-EMC electromagnetic compatibility certification, UL listing, and UKCA conformity cover every unit we ship. Each distributor leaves our factory individually tested for magnetic pickup signal, module switching function, mechanical advance travel, and vacuum advance response. EP is part of the Ever-Power Group, also producing electric motors and a comprehensive range of mechanical transmission products.

Disclaimer: Chevrolet, Ford, Chrysler, Dodge, Plymouth, Holden, and other vehicle brand names and OEM part numbers are used for product compatibility reference only. EP (Ever-Power) products are high-quality aftermarket replacement parts and are not affiliated with original vehicle or component manufacturers. All trademarks remain the property of their respective owners.

LMC