Chev Holden LS1 V8 Engines ARP Main Stud Kit # 234-5608Chev Holden LS1 V8 Engines ARP Main Stud Kit # 234 5608 Main Bolt Style: 6 bolt Fastener Style: Stud Fastener Nut Style: Standard hex Works with Windage Tray: Yes Fastener Tensile Strength (psi): 190,000 psi Nuts Included: Yes Washers Included: No Quantity: Sold as a kit. Notes: Will work in conjunction with the factory windage tray. Kit includes side bolts. Gen III LS Series small block and GMPP LSX block. New LT1 must use ARP 234 5802. Windage tray