Hays - 13-130 - 1964-1981 Pontiac 326-455, 166-Tooth, 30 lb, Internal Balance

These SFI-Rated flywheels are engineered to handle extreme duty applications and designed to take the punishment of todays high horsepower engines. Our billet steel flywheels are CAD engineered and precision CNC machined to strict tolerances. For internally balanced engines. Includes a removable black insert that allows this to fit the 2.5" crank and remove to fit the 2.75".