Aftermarket: Source of parts made by companies other than the original manufacturer. In the hot rod and custom world, the term is used to refer to the many companies that manufacture parts specifically for hot rods and custom cars. Alky: alcohol fuel for racing. aka; methyl alcohol or methanol, a very high-octane fuel.Ardun heads: Created by Zora Arkus-Duntov (circa 1947), the Ardun Manufacturing company fabricated overhead valve cylinder heads with hemispherical combustion chambers that could be bolted to the Ford V-8 60 (flathead) block. Precursor to the Chrysler “hemi,” Ardun heads delivered serious horsepower gains for hot rodders and racers … Continue reading Hot Rod Glossary