Repl Cyl Sleeve SBC 4.110 Bore 4.310 OD

The Replacement Cylinder Sleeve SBC 4.110 Bore 4.310 OD from Darton Sleeves is a precision-engineered casting solution designed for serious Small Block Chevy engine builders and performance enthusiasts. When a stock cylinder wall wears beyond honing limits or you're boring an engine beyond factory specifications, a quality replacement sleeve restores structural integrity and allows continued displacement increases. This product targets builders tackling high-mileage engine refreshes, bore-out builds, or damaged cylinder repair on iconic SBC platforms.

The 4.110-inch bore dimension accommodates larger pistons and rings, enabling cubic-inch growth in naturally aspirated or forced-induction applications. The 4.310-inch outer diameter ensures proper interference fit during the honing and installation process, creating a stable platform for reliable ring sealing and combustion pressure containment. Darton's sleeve technology uses ductile iron composition, which resists wear, thermal cycling, and the stress cycles common in performance engines running elevated boost levels or nitrous systems. Proper installation with controlled honing to achieve tight tolerances is essential for longevity.

This sleeve fits all standard Small Block Chevy engine variants—283, 305, 327, 350, and 383-based builds—making it invaluable for hot rod shops, racing teams, and DIY rebuilders. Whether restoring a vintage 350 or stretching displacement in a modern LS-adjacent stroker project, proper sleeve selection prevents catastrophic failure from thin cylinder walls. Professional installation with a qualified machine shop ensures correct bore sizing, proper deck height management, and optimal ring gap clearance for maximum reliability and power delivery.