If you're a control freak, late-model electronic transmissions are just what you need to modernize your classic car, and if you decide to go that route, a transmission control module is a must-have.

There was a time in the mid-’50s when serious small-block and W-motored big-block Chevys danced off the showroom floor with twin Carter WCFBs bolted to a 2x4 intake manifold. John Buck is a longtime ...