LS Alm. Block - 9.240/ 4.125 w/Steel Main Caps - 31937211 - Dart

Engine - LS Next - Bare Block - 4.125 in Bore - 9.240 Deck - 4-Bolt Main - 1-Piece Seal - 0.375 in Extended Cylinder Barrels - Aluminum - GM LS-Series - Each