SBC Main Bolt Kit - Fits 4-Bolt - L/J 6pt.

The ARP SBC Main Bolt Kit for 4-Bolt, Large Journal, 6-point fasteners is designed for small-block Chevrolet engines that require enhanced crank integrity during high-performance applications. This kit is suitable for various builds, including street cruisers and drag cars, ensuring that the crankshaft remains secure under demanding conditions.

Constructed from ARP's proprietary alloy, these bolts feature a 6-point socket head design that provides superior clamping force and fatigue resistance compared to standard fasteners. The large journal configuration ensures compatibility with blocks designed for larger crankshaft journals, while the precise manufacturing process and micro-polished finish help reduce stress risers and enhance durability.

This SBC main bolt kit is ideal for engine builders and enthusiasts looking for reliable fastening solutions in high-performance scenarios. It fits 4-bolt main blocks commonly found in small-block Chevrolet configurations, including LS1, LS2, 305, 350, and 383 stroker variants.