BBC Main Stud Kit - Fits 4-Bolt- No Windage Tray

The BBC Main Stud Kit - Fits 4-Bolt - No Windage Tray (ARP 135-5601) is a precision fastening solution engineered for big-block Chevrolet engine builders and high-performance mechanics who demand bulletproof reliability under extreme cylinder pressure. This stud kit addresses the critical need for superior clamping force on 4-bolt main bearing caps, where factory bolts often fail under boost, nitrous oxide, or sustained high-RPM operation. Whether you're assembling a race engine, stroker build, or forced-induction platform, proper main stud specification is non-negotiable for block integrity.

ARP studs are manufactured from premium alloy steel and heat-treated to exacting specifications, delivering consistent tensile strength and preload retention that factory fasteners cannot match. The 4-bolt configuration fits standard BBC main caps without modification, and this kit is specifically designed for engines running without a windage tray, eliminating fitment complications during assembly. ARP's controlled-stretch technology ensures accurate torque-to-yield performance, allowing you to achieve repeatable clamping force across all bearing positions while minimizing the risk of cap distortion or stud fatigue failure during sustained high-output operation.

This BBC Main Stud Kit is essential for anyone building a 427, 454, or 502 big-block platform intended for track duty, street performance, or marine service where reliability is paramount. Installation requires basic hand tools and familiarity with main cap torque sequences—ARP provides detailed fastening instructions with each kit. The studs accept standard 3/8" wrenches and are compatible with both iron and aluminum main caps, making them versatile across a broad range of BBC applications. For engine builders and enthusiasts serious about longevity, this stud upgrade is a single-point investment that prevents catastrophic failure and restores confidence in your build.