To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

The original AOD (Automatic Overdrive) transmission was basically the old cast iron Ford FMX reborn as a lighter more fuel efficient overdrive slush box in 1980. The AOD had the FMX’s super rugged ...

For more than a decade, installing an overdrive-automatic or manual transmission into a vintage Mustang has been a popular upgrade. It's more common these days, but some people still aren't convinced ...