ARP 234-4036 High Performance Cylinder Head Stud Kit Chrome Moly - 8740

The ARP 234-4036 is a premium cylinder head fastener kit engineered for high-performance and racing applications. Built from ARP's proprietary 8740 chrome moly steel alloy, these fasteners deliver exceptional strength and reliability far exceeding standard automotive-grade hardware.

Advanced Manufacturing Process:

• Precision heat-treated to 200,000 psi using vertical rack positioning for complete, uniform heat penetration
• Centerless ground after heat-treat for superior concentricity and straightness
• Thread rolled after heat-treatment for approximately 1000% better fatigue strength compared to pre-heat-treat threading
• Cold-forged construction ensures molecular integrity throughout the fastener

Key Features:

• Premium 8740 chrome moly steel alloy rated at 200,000 psi tensile strength
• Hex head design with wide-area flange eliminates need for valve train removal during retorquing
• Undercut shorter studs equalize stretch for more consistent clamping force
• Hardened, parallel-ground washers included for even load distribution and accurate torque readings
• Precision tolerances allow cylinder heads and gaskets to align effortlessly during assembly

Performance Benefits:

Head studs provide superior clamping consistency compared to bolts because they stretch only on the vertical axis during torquing, eliminating the twisting forces that affect bolts. This results in more accurate torque readings and more uniform cylinder head sealing. The undercut design on shorter studs compensates for head gasket compression, helping prevent blown gaskets in high-performance applications.

Each fastener is stamped with the ARP logo as your assurance of quality. This kit meets ARP's zero-defect, zero-failure quality standard and is trusted by professional engine builders across all forms of motorsports.