The LA engines are a family of pushrod OHV 90° V-configured gasoline engines built by Chrysler Corporation. It was factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications from 1964 through 2003. The combustion chambers are wedge-shaped, rather than the polyspherical combustion chambers in the predecessor A engine or the hemispherical chambers in the Chrysler Hemi engine. All versions are made of cast iron, except for the Viper V10 which is aluminum. LA engines have the same 4.46-inch (113 mm) bore spacing as the A engines.