ATI serpentine supercharger pulleys drive your request for boost
you can upgrade your E41 ECM in roughly 20 minutes—all you need is this upgrade kit
Tensioner Pulley (Main Drive) (Steel) Sep 2004 - Jul 2006
allowing 2x analog input signals and 1x CAN bus input signal simultaneously
and configurations for fitment on specific make/model and engine applications
LSA, 6.2, GMP, MLS HEAD GASKET, SINGLE, 7 LAYER 12622033 VCM CHAIN ATI serpentine supercharger pulleys driveChevrolet Performance composition head gaskets are recommended for stock and mildly modified engines. Head Gasket, 7 Layer, 4. 100 in. Bore, . 054 in. Thickness, Chevy, 6. 2L, LS9, LSA GM12622033 **Please note these are Sold Individually 2x required to do 1 Engine**