1/2 Stud - 3.400 Long Broached

The 1/2 Stud - 3.400 Long Broached by ARP is a precision fastener engineered for high-performance engine builds and critical structural applications where maximum clamping force and reliability are non-negotiable. This stud serves as the foundation for assembling cylinder heads, intake manifolds, and other load-bearing components in modified or race engines where standard hardware simply cannot withstand the pressures and vibration cycles. Whether you're building a stroker motor, upgrading a turbo engine, or restoring a classic with modern power, ARP studs deliver the repeatable, consistent performance that separates a solid build from a catastrophic failure.

ARP studs are manufactured from premium-grade alloy steel and feature a broached design, which creates a smooth, uniform fastener body that resists galling and ensures even torque distribution across the entire clamping surface. The 3.400-inch length provides the reach needed for deep-mounted applications while maintaining the structural integrity required under sustained high-boost or high-RPM conditions. ARP's meticulous quality control and material specifications mean each stud delivers predictable preload characteristics—critical data that tuners and engine builders rely on when calculating head gasket sealing pressure and overall engine durability in forced-induction or naturally aspirated performance platforms.

This 1/2-inch stud is ideal for technicians building LS-series engines, big-block Chevys, and other platforms requiring robust fastening solutions for cylinder head assembly. Installation requires proper torque sequencing and ARP's proprietary thread-locking compound to prevent loosening under thermal cycling and vibration. Verify thread pitch and mounting hole depth on your specific engine block before ordering, as stud length is critical for achieving correct clamping load without bottom-out or insufficient thread engagement. For serious builders and performance shops, ARP studs represent insurance against downtime and engine damage.