ARP Main Stud Kit Ford FE 390 - 428 V8 Engines # 155-5404ARP Main Stud Kit Ford FE 390 428 V8 Engines # 155 5404 Main Studs, Hex, Chromoly, 2 Bolt Main, Ford, Big Block FE, Kit Main Bolt Style: 2 bolt Fastener Style: Stud Fastener Nut Style: Standard hex Works with Windage Tray: No Fastener Tensile Strength (psi): 190,000 psi Nuts Included: Yes Washers Included: Yes Quantity: Sold as a kit. Notes: It will be necessary to chamfer the holes in the top of the No . 5 rear cap to clear the underhead radius of