Milodon 11365 Main Caps Big Block Chrysler 426-440 RB-Series 5-Cap Set

The Milodon 11365 Main Cap Set is designed to strengthen factory 2-bolt Big Block Chrysler 426-440 RB-Series engine blocks while preventing cap walk. This complete 5-cap set features straight-bolt configuration and is CNC machined from high-strength ductile iron material, providing the proper balance of strength and rigidity to handle increased shock loads transferred to the crankshaft and bearings.

Key Features:

• Complete 5-cap set for Big Block Chrysler 426-440 RB-Series engines
• CNC machined from high-strength ductile iron for optimal strength and flexibility
• Straight-bolt 2-bolt design provides enhanced structural integrity
• Requires only .030" of material removal upon installation for 100% cleanup on damaged or crooked blocks
• Includes all necessary bolts, washers, and drill bushing for side bolt installation
• Side bolts can be installed by anyone with a hand drill and tap
• Provides more cross-sectional strength to prevent bearing damage and horsepower loss
• Eliminates cap walk that can lead to engine failure

Installation Notes:

• Standard align bore required if block has square main registers
• Milling the mains only necessary if main registers are not square
• For maximum strength, installation of Milodon main studs is highly recommended
• Professional installation and machining recommended for optimal results

Milodon main caps deliver superior strength compared to factory components, making them ideal for high-performance and high-horsepower builds where bottom-end reliability is critical.