14.23" OD /164 Teeth, 11.438" Bolt Pattern, External Balanced, 28oz. SFI APPROVED ASTM1045 HEAVY DUTY STEEL RACING APPLICATION FLEX PLATE. Ford 289/302 /351C /351M /351W /400M '63-88. ASTM1045 Steel Plate with 3.5mm thickness for Tough and Heavy Load Operation.
