Callies is pleased to introduce the Ultra XD connecting rod. This unique patent pending configuration is designed for additional cam to rod clearance in long stroke Small Block Chevy racing engines. In most cases, the XD rod will provide approximately .050″ more cam clearance than our conventional Ultras, and substantially more over many of our competitor’s rods.
To learn more, watch the video – then contact one of the awesome members of our sales staff.
Small Block Chevy 6.000″ and 5.850″ for 2.100″ journal are in stock now.