Callies ULTRA Forged Connecting Rods FORD GODZILLA 7.3L
Callies has developed the Ultra connecting rod with the design goal of an uncompromised strength to weight ratio. Every Ultra connecting rod is produced from specially formulated 4330 Timken Steel and precision forged for uniform grain flow and consistency. Many geometric nuances are incorporated into the design of Ultra connecting rods, which are subject to high output, high RPM applications. These design features enhance the Ultra against specific loads and stresses.
Ultra connecting rods are fastened by high alloy cap screws produced specifically for severe applications by ARP. Purpose built 260Ksi Ultra Bolts offer improved thread engagement for a smoother, more consistent net clamping load. To eliminate deformation and extrusion only Ampco 45 bronze silica alloy is used within the wrist pin housing bore. This material has a proven hardness more than 26% greater than commonly used Ampco 18 material. For high RPM or extreme horsepower applications, Ultra connecting rods are fitted with Custom Age bolts. These high strength alloy fasteners provide unparalleled clamping strength and toughness. Upgraded bolts are available for all Ultra I-Beam connecting rod configurations.
- Custom Configurations are available.
- Rated for 1600 HP
- Callies Ultra connecting rods are produced from extremely clean TimkenSteel that is formulated to our exact specifications. This proprietary steel is forged in Trenton, Michigan, and manufactured 100% in our Fostoria, Ohio facility. Pride in workmanship, and attention to detail are qualities you’ll discover during careful examination of our finished product. Each step of the manufacturing history of every Ultra connecting rod is meticulously maintained by our manufacturing team. You can be confident of the material and workmanship of these quality components.
- The Ultra H-Beam configuration was recently added as part of our expanding connecting rod line. Made from the same premium grade TimkenSteel material, the Ultra H-Beam connecting rod is designed to satisfy the requirements of the most demanding racing applications.
- **All Ultra rods can be upgraded with Custom Age Bolts (-CA)
- Ultra H-Beam
- Standard Features
- 100% made in America
- Produced from clean TimkenSteel product
- Manufactured to exacting tolerances in our Ohio facility
- Designed to satisfy the requirements of the most demanding racing applications.
***Due to the Custom Nature and Options Available - All Connecting Rods are Ordered to Customer Specifications***
Sold as a Set of 8 - Also Available individually
