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Your cart is empty.Professional Products 7.5 Inch Damper for Big Block FE Ford 352/390/406/410/427/428 features a damper which is identical dimensionally to the damper originally used on the high performance 427. That engine's stock damper had an integral single groove pulley. This damper includes a pulley and although the damper is 7.5 inches in diameter, it can be used on any FE engine including those that had a stock 7 inches damper. This damper is designed to allow the removal of the stock single groove pulley, and multiple groove pulleys can bolt directly to it. An adapter spacer is included with the damper to allow proper belt alignment. This damper also comes with a universal timing pointer to suit the larger 7.5 inches diameter damper and the pointer will bolt to either of the two different bolt patterns Ford used for timing pointers.