Why is the Chrysler Hemi V8 so legendary?
The Chrysler "Hemi" V8 are a series of American V8 internal combustion engines known for their simplicity, reliability, low cost, high power and torque output. Originally the Hemi was named for the Hemispherical shaped combustion chamber that increased power and efficiency.  The very first Hemi engines were originally developed during World War II for the Republic P-47 and the M47 Patton Tank and they were first introduced into passenger cars in 1951 as the Chrysler FirePower. 

The Hemi is now in its third generation (3G) being built from 2003 to the present at Chrysler's Saltillo Engine plant in Ramos Arizpe Mexico.  The 3G Hemi's have had power outputs from 345 horsepower in the first 3G 5.7 Liter to 1025 horsepower in the 6.2 High Output Demon 170 engine.   The latest 6.2 Hemi in the Demon 170 is now one of the most powerful engines installed in a passenger car in the world at a fraction of the cost of other 1000 horsepower vehicles.

All of these factors have added up to make a tough, powerful and extremely desirable engine for automotive enthusiasts around the world cementing the Hemi Legend.
Instruction: Why is the Chrysler Hemi V8 so legendary?
Context: 
Response: The Chrysler "Hemi" V8 are a series of American V8 internal combustion engines known for their simplicity, reliability, low cost, high power and torque output. Originally the Hemi was named for the Hemispherical shaped combustion chamber that increased power and efficiency.  The very first Hemi engines were originally developed during World War II for the Republic P-47 and the M47 Patton Tank and they were first introduced into passenger cars in 1951 as the Chrysler FirePower. 

The Hemi is now in its third generation (3G) being built from 2003 to the present at Chrysler's Saltillo Engine plant in Ramos Arizpe Mexico.  The 3G Hemi's have had power outputs from 345 horsepower in the first 3G 5.7 Liter to 1025 horsepower in the 6.2 High Output Demon 170 engine.   The latest 6.2 Hemi in the Demon 170 is now one of the most powerful engines installed in a passenger car in the world at a fraction of the cost of other 1000 horsepower vehicles.

All of these factors have added up to make a tough, powerful and extremely desirable engine for automotive enthusiasts around the world cementing the Hemi Legend.