How long will a Hemi engine last?
5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out.
Early models suffered from valve seat issues which was rectified after 2008.
It’s not uncommon to find high mileage 5.7 Hemi trucks running around today..
Is a hemi better than a v8?
There are three primary pros of HEMI engines when compared against standard V8 engines. The first pro is that HEMI engines feature a hemispherical shape, which significantly reduces the overall surface area of the engine. … Another pro of HEMI engines is larger valves and increased space available between the valves.
What is the best Hemi engine?
The most popular, highly sought after third-generation Hemi engine is the famous 6.2-liter Hellcat V8. This engine was born when Chrysler engineers mounted an enormous 2.4-liter supercharger on top of the already powerful stock Hemi V8. The result was astonishing with 707 HP and 650 lb-ft.
Why are Hemi engines so powerful?
The Hemi engine, by design, does a better job of burning all the fuel in the cylinder. Also, because of its design versus a flat head, the surface area is smaller and that means less heat escapes, plus peak pressure can be higher. Also advantageous, is the size of the valves.
Why was the HEMI banned from Nascar?
The HEMI engine was a mechanical marvel that was so successful it was banned from NASCAR after its first year. … By 1963, the 426-cubic-inch Wedge engine used in NASCAR was deemed to have hit its limit for horsepower.
What is so special about a Hemi engine?
What Makes HEMI Unique? HEMI has a super-efficient combustion chamber, making it markedly more powerful than other engines. Unlike a flat head piston on the engine you might find in your lawnmower, HEMI pistons usually have a dome-shaped head with open, angled valves and twin spark plugs per cylinder.