This high-quality steel pulley replaces the V-belt drive pulley on the crankshaft of the Formula Ford 1600 engine. To convert to a toothed belt drive, you will also need a water pump pulley and an XL toothed drive belt, each sold separately.
The 30 tooth crank pulley size is often paired with a 44 tooth water pump pulley (sold separately). This will underdrive the water pump at 68% of crankshaft speed (1.47:1 drive ratio) to reduce cavitation at high RPM operation. Many older cars used this 30 tooth pulley with a smaller 34 tooth water pump pulley for a 1.1:1 drive ratio.
The ID and keyway on this pulley fit the stock Ford crankshaft snout (including SCAT cranks). The body OD is designed to work with the standard Ford front crank seal. Works with 3/8" or 1/2" wide XL-series toothed belts. Pulley OD at the teeth measures approximately 1 7/8" (2 3/16" at the belt fence).