471529 Flex Plate 12.75"

Outside diameter is 12 3/4" for years 1969-85. Crank Flange bolt pattern: 3.58"; Converter Bolt Pattern.: 9.75", 10.75"; starter ring gear teeth: 153. For internally balanced engine with two-piece crank seal. Torque converters for TH350 and TH400 transmissions are produced with both 10.75" and 11.50" diameter converter bolt patterns. T

o identify the correct pattern, measure from the converter center to an attaching bolt hole and then multiply this dimension by 2.