1 - ADM 2.75" - 8 Rib Lsa/Lt4 Supercharger Pulley holley each supercharger housing features optimized

each supercharger housing features optimized inlet porting and a large unrestricted discharge port for maximum flow and distribution across intercoolers

This cam is on the upper end of aggressiveness for GM LSA and LS9 engines

045" of spring shim

Includes: 2 adapter plates (2-1/2" thick) with 8 O-ring seals

1 - ADM 2.75" - 8 Rib Lsa/Lt4 Supercharger Pulley holley each supercharger housing features optimizedADM 8 RIB 2 Piece pulley allows higher boost output from the 1. 9 liter supercharger and lower boost on an Lt 4 supercharger. All pulleys are raw machined aluminum. Pics are just for reference This pulley requires our 10 bolt hub and screws