What makes a hemi a hemi?

Answer Hemi engines were being developed for the public as early as the 1950's, relying on an innovative design to increase horsepower and efficiency. In recent years, the Hemi engine has become synonymou... Read More »

Top Q&A For: What makes a hemi a hemi

What is a hemi engine?

For most enthusiasts, the legendary "hemi" moniker brings to mind images of classic Chryslers and Top Fuel dragsters. However, this combustion chamber design is more prevalent than you might think.... Read More »

What is hemi power?

While "hemi" may be the most celebrated four letters in automotive history, its history is a bit longer and more complex than most realize. Hemi engines were among some of the first ever built, and... Read More »

What is the horsepower of a 426 HEMI?

Chrysler rates the 426 HEMI engine at 425 horsepower. An independent dynamometer test showed that the engine could produce 433.5 horsepower at 6,000 RPM. Maximum torque of 472 foot lbs. was reached... Read More »

What is the valve size of a 331 Hemi?

Depending on the location of the valve within the engine, the size will differ. The intake valve size on the 331 Hemi is 1 13/16-by-5 inches, and the exhaust valve size is 1 1/2-by-4 29/32 inches.R... Read More »