Callies Bare Block - 4.500" Bore - 10.725 Deck - 4-Bolt Main - 2 Piece Seal - Iron - Gen II Hemi LGXF They are both forged from

They are both forged from aerospace alloy and heat-treated prior to thread rolling and machining

free-flow design for maximum flow and power

This racing pedigree makes them a top choice when building an engine

Forged Steel

Side B is 3/4"-16

Callies Bare Block - 4.500" Bore - 10.725 Deck - 4-Bolt Main - 2 Piece Seal - Iron - Gen II Hemi LGXF They are both forged fromProduct Description: Engine Bare Block 4. 500 in Bore 10. 725 Deck 4 Bolt Main 2 Piece Seal Iron Gen II Hemi Sold Individually Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech design