MAIN CAP ANGLED BOLTS BBC

These aftermarket main caps strengthen factory 2-bolt and 4-bolt blocks. They feature angled side bolts that pull from the block's side walls, preventing "cap walk" and associated bearing damage/horsepower loss. CNC machined from high-strength ductile material, offering a balance of strength and flexibility. Requires only 0.030" material removal upon initial installation, which allows for 100% cleanup on a damaged or crooked block. The drill bushing used to drill and tap the side bolt holes is included in the kit. The side bolts can be installed by anyone with a hand drill and a tap. If the block has square main registers, the block needs only a standard align bore to finish the job. Milling the mains is only necessary if the main registers are not square. All necessary bolts, washers, and the drill bushing are included in the center three cap kit. For maximum strength the installation of Milodon main studs are highly recommended.