ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers. Bearing data Part number: 8B743HXD Bearing size: STD Bearing half type: Lower Bearing material: F781 Technical data (mm) Max overall length: 22.58 Max shaft size: 55.88 Max tunnel size: 59.06 Max vertical oil clearance: 0.103 Max wall at crown: 1.559 Min shaft size: 55.855 Min tunnel size: 59.047 Min vertical oil clearance: 0.049 Technical data (in) Max overall length: 0.888974608 Max shaft size: 2.19999562 Max tunnel size: 2.325192221 Max vertical oil clearance: 0.00405511 Max wall at crown: 0.061377831 Min shaft size: 2.19901137 Min tunnel size: 2.324680411 Min vertical oil clearance: 0.00192913 Engine code 366 Big Block / 396 Big Block / 402 Big Block / 427 Big Block / 45