Main Caps

A quality set of main caps is critical to engine block integrity under high RPM and boost conditions. These billet caps provide the clamping force and precision fit your 400-cube small block needs to handle sustained performance, whether you're running...

If you're building or rebuilding a small-block Chevy 350, the integrity of your main caps directly impacts engine durability and reliability under load. These billet main caps provide superior clamping force and resist flex better than OEM cast...

Stock cast-iron main caps can flex under high RPM loads, compromising crankshaft stability and risking catastrophic engine failure. Upgrading to billet main caps significantly increases rigidity and load-carrying capacity, ensuring reliable power...

A quality main cap setup is non-negotiable for any serious Small Block Chevy build—it's the foundation that keeps your rotating assembly stable under load. These ductile iron caps are engineered for durability and precision fitment, giving you the...

If you're building or rebuilding a Small Block Chevy 350, main cap integrity is non-negotiable—it's what keeps your crankshaft stable under peak cylinder pressures and sustained RPM. This ductile iron kit delivers the strength and precision you need for...

If you're running a high-revving small block Chevy 350 and pushing serious power, factory main caps won't cut it. These billet main caps provide the rigidity and precision needed to keep your crankshaft stable under extreme load, reducing deflection and...

A quality main cap is critical for small block Chevy engine reliability and longevity. This Dart rear main cap is engineered for precision fitment and durability, ensuring your engine block maintains structural integrity under load. Whether you're...