6.535 in. Length | 2.325 in. Big-End Bore | 0.990 in. Pin | Set of 8 | Big Block Chevy

Build your Chevrolet Big Block V8 rotating assembly around Manley 14066-8, a 8-piece connecting rod set in the H-Beam range. This version combines 6.535 in. center-to-center length, a 2.325 in. big-end housing bore and a 0.990 in. wrist-pin configuration with 7/16 in. ARP 8740 cap screws. The exact dimensions, material and supplied fasteners identify the rod combination you are buying.

Key Features & Specs:

• Center-to-Center Length: 6.535 in.
• Wrist Pin Diameter: 0.990 in.
• Pin End Bore: 0.9911 in.
• Big End Housing Bore: 2.325 in.
• Crank Journal Diameter: 2.200 in.
• Length Configuration: 0.400 in. longer than stock
• Pin End Width: 1.125 in.
• Rod Material: Forged 4340 steel
• Rod Bolts: 7/16 in. ARP 8740 cap screws
• Quantity: Set of 8
• Series: H-Beam
• Beam Design: H-Beam
• Approximate Rod Weight: 815 g per rod
• Engine Type: Internal combustion
• Engine Application: Chevrolet Big Block V8
• Brand: Manley Performance
• Manufacturer Part Number: 14066-8
• Product Type: Engine connecting rod set

Performance Construction:

Manley’s H-Beam construction brings forged 4340 steel and precision-finished rod geometry together in a practical performance-engine upgrade. The manufacturing process includes heat treatment, stress relief, shot peening and magnetic-particle inspection. Attention to the housing finish, threads, bend and twist gives this series the machining detail expected in a purpose-built rotating assembly.

The Big Block Chevrolet application is defined by its 2.200 in. crank journal and 0.990 in. wrist pin. The listed center-to-center length identifies the stock or extended-length combination, making this set useful for a Big Block rotating assembly planned around that exact geometry.

The 0.9911 in. pin-end bore and 2.325 in. big-end housing bore describe the two rod ends, while the 6.535 in. center-to-center measurement defines rod length. The crankshaft journal configuration is 2.200 in., paired with the housing bore specified below. Average rod weight is approximately 815 g per rod, giving this exact MPN a useful weight reference alongside its dimensions. The pin end measures 1.125 in. wide.

The supplied 7/16 in. ARP 8740 cap screws are part of this rod’s specification. This ARP 8740 version brings the stated fastener grade together with the 4340 steel H-Beam profile, pairing the documented fastener package with the forged rod construction.

Fitment:

• Chevrolet Big Block V8

What’s Included:

• 8 Manley H-Beam connecting rods, manufacturer part number 14066-8
• 7/16 in. ARP 8740 cap screws supplied with the rods