HEI Advance Curve Kit
Modifies any GM HEI distributor with either clockwise or counterclockwise rotation and offers plenty of curve possibilities. Center plate eliminates overcentering of centrifugal weights.
Advance kit fits all '74-'79 GM HEI distributors except those that are computer-controlled. Includes two weights, center plate, three sets of color-coded springs, two pairs of nylon bushings and complete instructions.
PR550-929 Instructions
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