

Hemispherical refers to a half-sphere, so the piston tops have to be rounded in order to fit properly within the cylinders. A Hemi is an engine with a hemispherical combustion chamber, consisting of dome-shaped cylinders and piston tops.

After the success of Chrysler’s FirePower V8 in 1951, DeSoto rolled into the LA International Auto Show in 1952 with a big display on the new FireDome V8, its first Hemi variant. By the ’60s, Chrysler had popularized (and trademarked) the term “Hemi,” which was shorthand stemming from the hemispherical combustion chamber design.The word "hemi" is a shortening of the word "hemispherical," and as it relates to engines, means a type of engine that has a hemispherically shaped combustion chamber.This is faster than a lot of the other truck options that are on the market. The vehicle will do zero to sixty mile per hour in about 5.2 seconds and then will continue running and do the quarter mile in about 13.7 seconds depending on elevation. The legendary Supercharged 6.2L HEMI® V8 engine is only available on the 2022 Ram TRX and ensures all 6,447 pounds can charge from 0 to 60 MPH in just 4.5 seconds.The 5.7L Hemi V8 that is found in the 20 is a relatively fast engine for a truck.

THE MOST POWERFUL FACTORY-INSTALLED ENGINE EVER IN A HALF-TON TRUCK.
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However, his team first had to swap their Pro Mod Mustang and its twin-turbo engine for a black, 2018 Camaro with a ProCharged 521 cid Hemi. Nationals in Indianapolis, Steve Matusek of Aeromotive was fortunate enough to bounce right back.
