On the crankshaft vibration dampers, found 1975 and 1976 timing marks to be at about 1/2 inch or 6 degrees clockwise (as viewed from the front) of aligning with the bore key way. But on the 1978, the mark is directly aligned with the key way. The 1975 and 1976 use the timing plate mounted on the timing cover, but the 1978 uses an enlarged timing plate incorporating a sort of "tube" that looks like it is for a timing light adapter that I am not familiar with. I will continue checking these 3 engines & dampers tomorrow. I know that the outer ring is mounted in rubber that may have slipped, but it doesn't look like it has. But my first question for now: should the mark on the 1978 damper actually be the same location as on the 1975 & 1976?
