Callies Bare Block - 4.500" Bore - 10.725 Deck - 4-Bolt Main - 2 Piece Seal - Iron - Gen II Hemi JB100020 When clamping to 1-3/4" tubing

When clamping to 1-3/4" tubing

Steel roller is 2" wide with a series of 1/4" tall

Quick Change Rears

Available in plastic and aluminum

Callies Bare Block - 4.500" Bore - 10.725 Deck - 4-Bolt Main - 2 Piece Seal - Iron - Gen II Hemi JB100020 When clamping to 1-3/4" tubingProduct 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