• Mopar---standing for "Motor Parts"---is part of the Chrysler corporation. The Mopar engines are associated with several brands of vehicles, including Plymouth, Jeep, Dodge and Chrysler. Although the main production product is engines, the division also produces brakes, transmissions, cooling systems and steering parts. Mopar has been developing engines since the 1930s, when they started with "flathead" carbureted engines. Today, they manufacture several highly-rated engines, including the Hemi.
  
  

Carbureted Specs

• The oldest production unit of the Mopar division was the carbureted engine. The flathead six was one of the most popular models produced prior to the 1960s. They were later replaced with the "slant six" during the '60s, which came in several types, including the 225, 170, and 198. The top-producing engine was the 225 version, which was capable of generating 145 horsepower, as well as 215 foot-pounds of torque.
  
  

"A" Series Specs

• The first "A" series engine produced by Mopar was the 318, which was developed in 1957. The "LA" version was introduced in 1964, which was a nearly identical engine, but much lighter than the original. The A series---also known more popularly as the "small block"---included several different versions, such as the 360, 318, 340 and 273. The 340 version was the small-block Hemi that became popularized by the Hemi Roadrunner. The engine had a two-level manifold, large valves and a high compression.
  
  

"B" Series Specs

• The "B" series---which later became more popularly known as "big blocks"---included several versions as well, such as the 400, 362, 383 and the 350. The "RB" version---also known as "Raised Block"---featured the 426, 440 and 413. The 440 model was capable of up to 365 horsepower at the time of production. The six-barrel V-8 440 that was produced later could generate up to 390 horsepower.
  
  

Hemis, Pentastars and World Engines

• As Mopar caters to several different names in automobile manufacturing, there are several types of engines devoted to different companies. The Hemi has become popularized again in Dodge truck models. The Pentastar engine is equipped in several Chrysler vehicles, but can also be found in some types of Mercedes. World Engines can be found in some Mitsubishi and Hyundai models.