Callies Ultra I-Beam connecting rods give Ford engine builders a domestically produced, precision-forged foundation for high torque and high boost builds on the 4.6L Modular and 5.0L Coyote platforms. Each rod starts as specially formulated TimkenSteel 4330V steel, precision forged in Michigan and fully machined at Callies' Fostoria, Ohio facility. The result is a connecting rod engineered for severe-duty racing applications where dimensional repeatability and material integrity are non-negotiable. This set ships with eight rods at a rod length of 5.933 inches, a rod journal of 2.239 inches, and a weight of 642 grams per rod.
TimkenSteel 4330V construction. Callies sources specially formulated 4330V billet from Timken, a material selected for its superior strength and fatigue resistance under high-load cycling. The precision forging process aligns grain structure with the rod's stress path, producing a stronger part than a comparable billet-machined alternative.
ARP fasteners with rolled threads. Every rod in the Ultra I-Beam series is fastened by high-alloy ARP cap screws produced specifically for severe-duty service. Rolled threads deliver improved thread engagement and a smoother, more consistent net clamping load compared to cut threads. Builders can choose between standard ARP 2000 bolts or an upgraded Custom Age 625 bolt option for superior clamping force in the most demanding applications.
AMS 642 bronze alloy wrist pin housing. To prevent deformation and extrusion at the small end, Callies uses AMS 642 bronze alloy in the wrist pin housing bore. This material resists wear and maintains dimensional stability under the oscillating loads applied at the pin joint, protecting bore geometry over the life of the build.
Geometric design features for high-stress applications. Callies engineers incorporated multiple geometric nuances into the Ultra I-Beam profile to address specific loads experienced in high torque, high boost environments. These refinements stiffen critical cross-sections, distribute stress more evenly across the beam, and extend fatigue life compared to conventional I-beam profiles.
Product Benefits
- Made in the USA: Forged in Michigan and fully machined in Fostoria, Ohio from start to finish.
- TimkenSteel 4330V: Specially formulated billet steel selected for fatigue resistance and high-load durability.
- Bolt Choice: Available with standard ARP 2000 or upgraded Custom Age 625 cap screws to match your power level.
- AMS 642 Bronze Pin Bore: Resists deformation and extrusion at the wrist pin housing for lasting dimensional accuracy.
- Rolled Thread ARP Fasteners: Consistent clamping load and improved thread engagement for repeatable assembly.
- Broad Fitment: Covers 4.6L Modular and 5.0L Coyote engines seen in Mustang and F-150 applications.
- Set of Eight: Complete set for a full V8 engine build, 5.933-inch length, 2.239-inch rod journal, 642 grams each.
Note: Fits Ford 4.6L Modular and Ford 5.0L Coyote engines seen in Mustang and F-150 applications. Callies Ultra I-Beam rods are designed for high torque and high boost applications. Verify dimensions are compatible with your build before ordering.
About Callies: Callies Performance Products manufactures crankshafts, connecting rods, and camshafts from its Fostoria, Ohio facility. The company supplies professional engine builders across drag racing, circle track, and high-performance street applications, with domestic forging and full in-house machining as the foundation of every part it produces.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Trim | GT |
| Vehicle Fitment | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
