FAST XDi Street HEI distributors include the industry-first gear technology with an upgraded module and coil that ensure clean ignition firing up to 8,500+ rpm. Ideal for SB and BB Chevy engines, each of the XDi distributors feature a plasma nitrided gear compatible with all popular camshaft materials, including cast iron, austempered iron, 5160 steel, and even 8620 steel. The special plasma nitride process used on the gears not only increases the gear's surface hardness, but also the "slickness" of the gear teeth reducing friction and increasing cam/distributor gear life, as well as making them superior to common melonized gears. XDi Street HEI distributors also feature powerful 6-amp ignition modules that drive custom-wound performance coils up to 50,000 V, providing the hot spark needed for maximum horsepower. While ready to run out of the box, for those that enjoy tuning the mechanical and vacuum advance mechanisms for better throttle response and fuel economy, FAST XDi Street HEI distributors include springs, advanced limit plate, and instructions needed to adjust the distributor for your particular engine/vehicle combination.

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