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Add to Favorite Sellers. 83647 HEAT HEI Module. High output replacement HEI module with built-in rev limiter. Using upgraded components, the HEAT HEI module produces high output for stock and MSD applications plus has a built-in rev limiter that is more accurate and easier to set with the engine running.. CARB EO # D-40-43. Fits in stock HEI distributors. Adjust the rev limiter without removing the cap! Built-in adjustable rev limiter can easily be set externally. Advanced dwell control for improved high rpm output. Easily installs to non-computer controlled (4-Pin) HEI housings. Produces an incredible 8.5 amps of juice! Customer Service & Feedback. So we have a chance to make it right – we want your repeat business! Check out the official Holley Performance. For more great deals!!

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Add to Favorite Sellers. 83647 HEAT HEI Module. High output replacement HEI module with built-in rev limiter. Using upgraded components, the HEAT HEI module produces high output for stock and MSD applications plus has a built-in rev limiter that is more accurate and easier to set with the engine running.. CARB EO # D-40-43. Easily installs to non-computer controlled (4-Pin) HEI housings. Built-in adjustable rev limiter can easily be set externally. Advanced dwell control for improved high rpm output. Produces an incredible 8.5 amps of juice! Adjust the rev limiter without removing the cap! Fits in stock HEI distributors. Customer Service & Feedback. So we have a chance to make it right – we want your repeat business! Check out the official Holley Performance. For more great deals!!

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