BBC Main Stud Kit 2-Bolt w/Windage Tray

The ARP Big Block Chevy Main Stud Kit 2-Bolt with Windage Tray is purpose-built for serious engine builders and high-performance enthusiasts who demand reliability under extreme combustion pressures. This fastening solution addresses a critical vulnerability in big block Chevrolet engines—the main bearing cap interface—where stock bolts can fail catastrophically during high horsepower applications, nitrous oxide use, or forced induction. Whether you're building a street monster, drag racing platform, or marine engine, upgrading to ARP studs transforms your engine's structural integrity and eliminates a major failure point.

ARP studs replace factory bolts with premium-grade fasteners engineered to distribute clamping force more evenly across the main bearing saddle, reducing flex and micro-movement that leads to bearing wear and cap lift-off. The 2-bolt configuration fits traditional big block Chevy blocks, while the included windage tray eliminates oil aeration in the crankcase, improving lubrication efficiency and reducing parasitic drag. These studs feature ARP's proprietary shot-peening and stress-relief process, delivering tensile strength and fatigue resistance far exceeding OEM specifications. The kit ships complete with all necessary hardware—studs, nuts, and washers—ready for installation with proper torque sequencing and thread-locking compound.

This main stud kit is essential for anyone serious about BBC engine durability, from weekend drag racers to vintage muscle car restorers seeking modern reliability. Installation requires basic engine disassembly knowledge and a quality torque wrench; most professional machine shops or experienced builders can handle the job in under two hours. The windage tray mounts directly to the studs, creating a sealed crankcase environment that's particularly beneficial in high-RPM or extended-run applications. Compatible with all traditional 2-bolt main big block Chevrolet engines, this upgrade has become an industry standard for any build exceeding 500 horsepower or incorporating boost or nitrous systems.