Dodge – Plymouth 225 Inline Slant 6 Cylinder Engine

The Dodge 225 slant six engine was one of the most popular engines every produced by Chrysler. The 225 was produced from 1960 until 1983 and was unique compared to other engines because the bore was much smaller than the stroke. This allowed the engine to produce a very large amount of torque which caused it to spread far beyond the use of the average automobile. It is similar to the Ford 300 inline 6 in the sense that it was not only used in cars and trucks but also in a vast array of farm tractors, forklifts and even boats.
The 225 slant six came with a one barrel carburetor that more or less suffocated the true potential of the engine. Many racing enthusiast quickly found out that a 2 barrel carburetor for the 225 would really make a lot of difference in the performance of the engine. From 1960 to 1962 Chrysler offered an over the counter performance kit for the 225 known as the Hyper Pak. This kit included a 4 barrel carburetor, new intake manifold and a bunch of other goodies that pushed the 225 from its base horsepower of 145 up to 195 horsepower at 5200 rpms.

As emissions control laws became stricter in the 70s the Dodge 225 saw several changes in order to continue its long production run. One of the biggest changes came in 1977 with the introduction of a turbo charged 225 slant six. The turbo charger only lasted for two years in the gas 225 engines but did return from 1980 to 1983 to be used in the 225 turbo-diesel.