BBC Main Stud Kit w/ Windage Tray 2 Bolt Main

The BBC Main Stud Kit w/ Windage Tray 2 Bolt Main is a precision-engineered cylinder head fastening system designed for Big Block Chevy engines requiring reliable, repeatable clamping force. Built for high-performance and heavy-duty applications, this main stud kit replaces factory bolts with superior fastening geometry that maintains critical bore alignment under extreme combustion pressures and thermal cycling. Whether you're rebuilding a competition engine, a diesel conversion, or a marine powerplant, proper main studs are non-negotiable for engine longevity and reliability.

Manufactured from chromoly steel and finished in black oxide, the BBC Main Stud Kit delivers superior tensile strength and corrosion resistance compared to standard OEM bolts. The 2-bolt main design accommodates classic and early-generation Big Block Chevy blocks, while the included windage tray provides secondary containment and improved oil distribution within the crankcase. Hex nuts ensure secure torque retention and simplify installation with standard wrenches or sockets. The chromoly construction resists fatigue crack initiation at stress concentrations, a critical advantage when running elevated boost, nitrous, or high RPM in street or track environments.

This kit is ideal for engine builders, performance shops, and powersports enthusiasts rebuilding Big Block Chevy applications from 348ci through 502ci displacements. Installation requires standard mechanical knowledge and proper torque sequencing; all fasteners must be tightened in a star pattern to manufacturer specifications to ensure even load distribution. Weighing 3.25 lbs and compact in footprint, the complete kit ships ready for immediate installation on compatible 2-bolt main BBC platforms. Consult engine-specific service manuals for correct torque values and any additional hardware requirements for your particular block generation.