New GM Gen V LT1 must use ARP #234-5802. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide finish for corrosion resistance. Notes: Will work in conjunction with the factory windage tray.
ARP 2345608 Stud Kit GM SB Chevy LS1 LS Cast Iron Engine Main Bearing *No Grease
ARP 134-5202 Main Cap Fasteners 4-Bolt Main SBC 350, 400 Hex
ARP 135-5402 Main Cap Fasteners - 2-Bolt Main Big Block Chevy 396 402 437 454
ARP 134-5601 Main Cap Fasteners - 4-Bolt Main Small Block Chevy 302 327 350 400
ARP 234-5608 Main Stud Kit for Small Block Chevy LS1/LS6, 4-Bolt Main
ARP 135-5002 Main Cap Fasteners-2-Bolt Main BBC 396, 402, 427, 454 Hex