The rise of LS and LT engine swaps has transformed the classic car restoration scene, bringing modern performance to vintage vehicles. However, these modern engines create a challenge for traditional mechanical speedometers. The Classic Instruments CI Drive Speedometer Conversion Interface from Holley provides a comprehensive solution for automotive enthusiasts seeking to upgrade cable-driven mechanical speedometers in older vehicles with new powertrain technology.

Car enthusiasts can now upgrade their vehicles without sacrificing the original aesthetic or mechanical character of their classic instruments.

Designed to work with a wide range of vehicles, the CI Drive addresses a common challenge faced by classic car restorers and engine swappers. It provides a straightforward method for connecting modern electronic speed signals to traditional mechanical speedometers, ensuring accurate speed readings without compromising the original aesthetic of the vehicle’s dashboard.

The speedometer conversion interface supports multiple speed input methods, including GPS and vehicle speed sensor signals. Its versatility makes it an ideal solution for various automotive applications, particularly for those performing engine swaps in classic vehicles. The system requires only 12 volts and ground, making installation simple and accessible for most automotive enthusiasts.

Key features of the CI Drive include compatibility with GM, Ford, and Mopar applications. The standard SN85 kit comes with a common cable that fits most popular vehicle types. For more specialized applications, users can purchase the box and cable separately, ensuring maximum flexibility for different restoration projects.

Installation is designed to be user-friendly. The plug-and-play connections allow for easy integration, enabling owners to retain their original mechanical speedometer style. Whether installed in the dash or under the hood, the device offers a practical solution for modernizing vintage speedometers.

The calibration capabilities of the CI Drive are particularly impressive. With a range from 170 to 1,650 turns-per-mile, the interface can accommodate diverse speedometer types. The default calibration of 1,000 turns-per-mile works perfectly for most US vehicles. When using a GPS signal, the unit automatically calibrates with the included GPS antenna, eliminating the need for manual adjustments.

For automotive enthusiasts committed to preserving the look and feel of their classic vehicles while enjoying modern performance capabilities, the CI Drive speedometer conversion interface provides an ideal solution. It demonstrates the potential to seamlessly integrate vintage design with contemporary automotive technology.