The mechanical weights and springs are setup for optimal performance. Most engines with medium to serious cams do not benefit from, need, or desire a vacuum advance. This is the type distributor intended for use with a cdi type box as well as an external coil. TSP Pro Billet distributors can be used with any brand cdi box and has a universal butt connector for easy plug and play. · 221,260, and 289/302ci V8 Engines · Maintenance free magnetic pickup · Sealed ball bearings · Sintered bushing · Hardened steel shaft · Tuned for optimal performance for Ford 289-302 V8 ENGINES.
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