This SFI heavy duty flexplate fits Buick: 455 ci motors from 1970 - 1976, without weight. It has 166 teeth and measures 14.00". These heavy duty Flexplates are manufactured from highest quality stamped carbon steel. Gear rings are made from 1045 steel for continuous kick ons and offs. All flexplates are double welded to a 0.15" center plate to meet SFI requirements.