BBC Main Stud Kit w/Windage Tray

The BBC Main Stud Kit w/Windage Tray is a critical upgrade for big-block Chevrolet engine builds that demand reliability under extreme load. Whether you're assembling a street performer, a high-horsepower race engine, or restoring a classic muscle car, main studs replace factory bolts to provide superior clamping force and prevent crankshaft movement during peak combustion pressure. This complete kit addresses a known weakness in original equipment—soft iron fasteners that stretch and loosen over time, especially in boosted or nitrous applications where cylinder pressures spike beyond stock limits.

ARP (Air Racing Parts) main stud kits utilize high-strength alloy steel with precise thread geometry and controlled preload specifications to lock the crankshaft in place. The included windage tray eliminates oil slosh in the pan, reducing drag on the crank throws and improving both cooling and horsepower efficiency—a measurable gain in competition environments. Installation requires proper torque sequencing and use of ARP fastener lubricant to ensure consistent clamp load across all studs; failure to follow correct procedure can result in uneven stress distribution and bearing damage. The kit's engineering is designed to work seamlessly within BBC blocks, accommodating factory deck heights and bearing saddle geometry without modification.

Serious builders, machine shops, and vintage race teams rely on this upgrade for any BBC engine destined for 500+ horsepower or forced induction. The windage tray component benefits both street and strip applications by stabilizing oil temperature and reducing parasitic losses. Compatibility spans all big-block Chevrolet generations (454, 396, 427, and earlier variants), making this kit suitable for Corvettes, Camaros, Chevelles, and truck-based powerplants. Proper installation with a torque wrench and attention to fastener specifications ensures the engine will safely handle peak boost, high RPM, and repeated heat cycles without main bearing failure.