ACL Bearings 8B663H-001 H-Series Connecting Rod Bearing Set, 0.001 in Undersize

The ACL Bearings 8B663H-001 H-Series connecting rod bearing set is designed for small block Chevrolet and GM LS-Series engines requiring a 0.001-inch undersize bearing fit. Built for performance-oriented and high-load applications, this rod bearing set supports reliable crankshaft-to-connecting-rod operation when properly matched to the engine’s measured journal specifications.
The H-Series design is engineered with a performance-focused bearing construction that helps provide dependable load support and durability under demanding operating conditions. Each bearing must be selected based on accurate crankshaft and connecting rod measurements, along with the engine manufacturer’s recommended clearances. Professional installation and careful inspection are recommended to help ensure proper fitment, oil clearance, and long-term engine performance.
This ACL Bearings rod bearing set is suitable for applicable small block Chevy and GM LS-Series engine builds using the specified 0.001-inch undersize configuration. Verify engine compatibility, bearing size, crankshaft condition, and installation requirements before ordering. The set is intended for replacement or performance engine assembly applications where consistent bearing quality and precise fit are important.
The ACL Bearings 8B663H-001 set is supplied as a connecting rod bearing kit and is not a complete engine rebuild package. Confirm all component specifications before assembly, including crankshaft journal size, connecting rod condition, bearing clearance, and lubrication requirements. This product is not classified as air restricted and does not require truck freight shipping.

Features:

• Brand: ACL Bearings

• Part Number: 8B663H-001

• Bearing Type: H-Series connecting rod bearing

• Fitment: Small block Chevrolet and GM LS-Series engines

• Bearing Size: 0.001-inch undersize

• Product Type: Connecting rod bearing set

• Application: Performance, replacement, and engine assembly use

• Shipping Classification: Not air restricted and not truck freight only