Out of stock
SKU: MIL11180
UPC: 806621111800
MPN: 11180
The SB 400 Main Caps from MILODON are essential components for small block Chevy engine rebuilds and high-performance engine swaps. Designed specifically for 400-journal crankshafts, these main caps secure the crankshaft to the engine block, ensuring proper alignment and load distribution under peak operating pressures. They are ideal for restoring classic muscle cars, building street rods, or assembling competition engines.
These SB 400 Main Caps feature a four-bolt design with splayed bolt geometry, manufactured from ductile iron, which offers a good balance of strength and durability. The splayed bolt pattern distributes clamping load evenly across the cap surface, reducing stress concentration and minimizing the risk of cap walk or crankshaft deflection during high-RPM operation. This design helps maintain structural integrity even under demanding conditions.
Engine builders, machine shops, and serious enthusiasts rely on MILODON main caps for both stock restoration and high-performance builds. These caps are crucial for any 400-journal small block Chevy crankshaft installation—be sure to verify your block's journal diameter and bolt pattern before ordering to ensure proper fit.
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