Description
1963-1985 GM Performance NOS Clutch Flywheel – 3991469
This 1963-1985 GM Performance NOS Clutch Flywheel has been discontinued by GM. This flywheel has never been installed and is still in the box. Fits big or small block. We would use these regularly in our old service department. Also works on 1962 and earlier if you use a 10.4 inch pressure plate. Not for use with external balance engines.
- Outside Diameter: 14″
- Crank Flange Bolt Pattern: 3.580″
- Clutch Diameter: 10.400″; 11.000″
- Starter Ring Gear Teeth: 168
- For two-piece crank seal
Years: 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, and 1985. Also works on 1962 and earlier if you use a 10.4 inch pressure plate