Hey Guys and Gals, Does anyone out there use a fisher harmonic dampener on ther 455 Buick? If yes.... Does the outer ring on the dampener move on yours? I ask because dad put a mark on the outer black ring on our dampener and it does not stay in the same place. Any help is appreciated. Thanks
John, The rings should rotate, but the part that has your timing mark should stay put. There are clutch disks and springs inside that have pressure against the rings. They will rotate during harmonic absorption. Mike Tomaszewski
Mike, Thanks for taking the time to answer this question. For the last 4 years I have never noticed this therefore I began to worry. Nice to hear from you Mike!!! Take Care