I am in the process of installing a SBC and a TH-350 into my LT1 car that formerly had a 4L60e. The computer is gone, thus the gauges and all other factory instrumentation no longer functions.

All I plan on installing for gauges was a Tach, Speedo, shiftlight, oil pressure, trans temp, and nitrous pressure. All of those gauges are mechanical and easy to wire, it is the speedo that is throwing me. I haven't even gotten to the wiring part of the build yet, but I wanted to plan it out before I get to that point.

Any and all advice is much appreciated.

Autometer offers a cable driven speedo not to mention the kit to make it work with a T350 or 400.