Don was telling T.C. and the world about the front-cockpit car’s watchtower visibility. With the Jupiter-sized Dodge Hemi now out back, Don enjoys crystal-clear vision down the track; and more ...

Jacob Potts, Mercer, PA: Here's something you may not hear too often. I'm seriously considering turbocharging one of GM's Turbo-Thrift 250ci L-6 engines for an early '70s Nova. I love the small-block ...

Editor's Note: Way back in March of 1998, GMHTP ran "Opti-Spark" by Ray Bohacz, an engineering-level dissection of GM's Opti-Spark distributor. This evolutionary ignition component was a bridge ...