2345608 Sb Chevy Ls1 Cast Iron Main Stud Kit

These main studs are made from 8740 chromoly steel and have a 190 000 psi tensile - strength rating. They are precision centerless - ground and thread - rolled to Mil - S - 8879 specs with a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high - strength hex nuts. Specifications Main Bolt Style - 4 - bolt Fastener Style - Stud Fastener Nut Style - Standard hex Works with Windage Tray - Yes Fastener Yield Strength - 200 000 psi Nuts Included - Yes Washers Included - Yes Application Make - CHEVROLET Year - 1997- 2004 Engine Size - 5.7L 350 5.3L 323 4.8L 294 6.0L 364