ACL Race Series Main Bearing Set Fits Ford 302/351Ci Cleveland has you covered:-high-Performance Trimetal Engine Bearingsability to withstand Higher RPM Conditionshigh Strength Overlay Plate for Improved Fatigue Propertieshardened Steel Backs on All Rod Bearings to Improve Bearing Lining & RetentionIncreased Crush for Improved Bearing RetentionElimination of Flash Plating on Back of Bearings & Maximise Grip Between Bearings & HousingIncreased Eccentricity to Compensate for Bore Distortion at High RPM & Assist in Formation of Hydrodynamic Oil Films3/4 Grooved Main Bearings to Optimise Bearing Load Carrying Surface Area & Oil Flow to Conrod BearingsTight Consistent Wall Tolerances to Help Maintain Consistent ClearancesEnlarged ID Chamfers on Bearing Edges Were Required to Accommodate Large Fillet Radius on Performance CrankshaftsSpecifications Half Type: Upper & Lower -Material: F780 -Min. Std Shaft Size: 69,809 mm / 2.7484 in -Max Std Shaft Size: 69,83 mm / 2.7492 in -Min. Std Tunnel Size: 74,719 mm / 2.9417 in -Max Std Tunnel Size: 74,74 mm / 2.9425 in -Max Wall at Crown: 2,443 mm / 0.0962 in -Max Overall Length: 22,35 / 0.8799 in (2107H), 28,4 mm / 1.1181 in (2108H(F))
