Callies Ultra H-Beam LS Connecting Rods Valves Have any questions or want

Have any questions or want a ProCharged LS with a different design or power level

Dart’s priority main oiling system ensures high rpm reliability and includes provision for oil restrictors in the lifter valley

This 555ci Big Block beats their 572 by over 100 on both horsepower and torque

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Callies Ultra H-Beam LS Connecting Rods Valves Have any questions or wantAt Borowski Race Engines, we use Callies Ultra rods for a lot of our LS engine builds. Why? Because they survive where others don't. Callies 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 Timken Steel 4330 and precision forged for uniform grain flow and consistency. Many geometric nuances are incorporated into the design of Ultra