6.657 in. Length | 2.239 in. Big-End Bore | 22 mm Pin | Set of 8 | Ford 5.4L Modular

Build your Ford 5.4L Modular / 5.8L GT500 V8 rotating assembly around Manley 14040-8, a 8-piece connecting rod set in the H-Beam range. This version combines 6.657 in. center-to-center length, a 2.239 in. big-end housing bore and a 22 mm (0.866 in.) wrist-pin configuration with 3/8 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: 6.657 in.
• Wrist Pin Diameter: 22 mm (0.866 in.)
• Pin End Bore: 0.8671 in.
• Big End Housing Bore: 2.239 in.
• Crank Journal Diameter: Stock journal configuration
• Length Configuration: Stock
• Big End Width: .940 in.
• Pin End Width: 0.940 in.
• Rod Material: Forged 4340 steel
• Rod Bolts: 3/8 in. ARP 8740 cap screws
• Quantity: Set of 8
• Series: H-Beam
• Beam Design: H-Beam
• Approximate Rod Weight: 645 g per rod
• Engine Type: Internal combustion
• Set Weight Matching: ±1.5 g
• Final-Honed Bore Tolerance: ±0.0002 in.
• Engine Application: Ford 5.4L Modular / 5.8L GT500 V8
• Brand: Manley Performance
• Manufacturer Part Number: 14040-8
• 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 6.657 in. center-to-center length identifies this Ford Modular rod family. Its 22 mm wrist-pin configuration and specified housing bore provide the dimensional basis for a 5.4L/5.8L performance rotating assembly. The named series and supplied bolt grade distinguish this version within Manley’s range.

The 0.8671 in. pin-end bore and 2.239 in. big-end housing bore describe the two rod ends, while the 6.657 in. center-to-center measurement defines rod length. Average rod weight is approximately 645 g per rod, giving this exact MPN a useful weight reference alongside its dimensions. The pin end measures 0.940 in. wide.

The supplied 3/8 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:

• Ford 5.4L Modular / 5.8L GT500 V8

What’s Included:

• 8 Manley H-Beam connecting rods, manufacturer part number 14040-8
• 3/8 in. ARP 8740 cap screws supplied with the rods