Racing Head Service LS Aluminum Block - 4.120 Bore 9.240 D/H RHS54903U

Engine - Bare Block - 4.125 in Bore - 9.250 Deck - Standard Main - 6-Bolt Mains - 1-Piece Seal - 6-Bolt Head - Aluminum - Natural - GM LS-Series - Each

Engines and Components, Engines, Blocks and Components, Engines, Bare Blocks by RACING HEAD SERVICE