Corvette Tach Drive Distributors

GM created 23 unique TI distributors for all the various engine applications from 1964 to 1971. Although not apparent, there is a difference between all 23 part numbers & that difference effects the overall function of the distributor. That is why it is important to match the distributor part number to the displacement & horsepower rating of your engine. Remember, the function of the distributor greatly effects the horsepower output & torque of the engine.