proflow distributor, hei street series, vacuum advance, bosch style black cap, for ford 302 351 cleveland late block small 12.5mm shaft

Proflow Economy Street Series HEI distributors feature a compact design with a Bosch style module, cap & rotor. These units offer calibrated advance curves that are optimised for maximum combustion efficiency, and the elimination of detonation damage and throttle ping. The distributors offer longer-term durability and a higher voltage spark that permits a bigger spark plug gap, resulting in more power and reduced plug fouling.