ARP SB Chevy 18A w/ 3/8in holes head stud kit

When you're rebuilding the top end of your Small Block Chevy, especially with 18-degree cylinder heads, ARP's 234-4322 head stud kit is what you'll want to use. This kit includes the necessary studs, nuts, and washers to properly secure your cylinder heads to the block. Using head studs instead of head bolts is a common practice for serious engine builders because they offer more consistent clamping force, which is crucial for sealing the combustion chamber, especially in high-performance applications.

ARP is well-known for making strong, reliable engine hardware, and this kit is no exception. The studs are made from ARP's proprietary 8740 chromoly steel, heat-treated to achieve a tensile strength of 200,000 psi. This material and heat treatment ensure they can handle the significant cylinder pressures and thermal stresses that come with a performance engine. The kit features 3/8-inch diameter studs, designed to work with 18-degree cylinder heads, and includes the required parallel ground washers and high-performance 12-point nuts for a secure and even torque application.

Proper installation is key with any head stud kit. Always follow ARP's specific installation instructions, which typically involve cleaning the block deck and head surfaces thoroughly, and using a quality thread sealant on the block threads of the studs. This attention to detail ensures the studs achieve their full clamping potential and contribute to a long-lasting, leak-free engine build.