12 Rib Supercharger Crank Pulley - 7.950 2% OD - Black Anodized lsx_an_inventory 00 Upper Pulley - 77

00 Upper Pulley - 77

Whipple WK-1810 (JD) with 4

Clears slant edge style tall valve covers  (some valve covers may require the use of a small case alternator to clear)

Direct Drive Superchargers with 3

12 Rib Supercharger Crank Pulley - 7.950 2% OD - Black Anodized lsx_an_inventory 00 Upper Pulley - 7712 rib crank pulley stock Dia. 7. 950 designed for the LSA Offset with 12 Rib. Bolt's to aftermarket harmonic damper's supporting both 3 bolt pulleys using the classic SBC BBC bolt pattern such as the ATI 918854 and ATI 918859 LSA Damper. FLEX DRIVE BELTS LSA KONG 3. 25 trough 2. 625 Upper 69. 9" 12PK1750 Magnuson Hot Rod with 3. 00 Upper Pulley 77. 2 Continental 4120772 Whipple WK 1810 (JD) with 4. 00 Upper Pulley 75. 8" 12PK1925 Whipple WK 1810 (JD)