Question: What Is The Best Hemi Engine?

Why do Hemis have 2 spark plugs?

The HEMI Magnum engine has two valves per cylinder as well as two spark plugs per cylinder.

The two spark plugs help to solve the emission problems that plagued Chrysler’s earlier HEMI engines.

The two plugs initiate two flame fronts and guarantee complete combustion..

How many miles will a Hellcat last?

More on our long-term Dodge Charger SRT Hellcat here:2016 Dodge Charger SRT HellcatPOWERTRAIN/CHASSISBASIC WARRANTY3 yrs/36,000 milesPOWERTRAIN WARRANTY5 yrs/60,000 milesROADSIDE ASSISTANCE5 yrs/100,000 miles56 more rows•Oct 14, 2017

What is the most powerful Hemi engine?

(Photo courtesy of Fiat Chrysler Automobiles). And the most powerful motor in Mopar history is actually a trio of blown beasts in the current Fiat-Chrysler lineup, the 6.2-liter Supercharged Hemi from the Hellcat and Hellcat Redeye Challengers, and the even hotter variant found in the Dodge Challenger SRT Demon.

What is so special about a Hemi engine?

A hemispherical head (“hemi-head”) gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves. … Since the combustion chamber is virtually a hemisphere, a flat-topped piston yields a lower compression ratio unless a smaller chamber is utilized.

Is the Hemi a good engine?

While these other advancements have their pros and cons as well, the Hemi engine is renowned for its reliability and impressive power output through its hemispherical design. While the new Hemi engines don’t have the same hemispherical shape that its predecessors had, it still relies on that shape to deliver its power.

How much HP can you get out of a 5.7 Hemi?

Run in otherwise stock trim, the 5.7L Hemi produced 385 hp at 5,500 rpm and 421 lb-ft of torque at 4,300 rpm. Illustrating that the Hemis know how to produce more than just peak horsepower was the fact that torque production from the 5.7L exceeded 375 lb-ft from 3,300 rpm to 5,300 rpm.

Is the 5.7 L Hemi a good engine?

Is The 5.7 Hemi A Good Engine? Overall, the 5.7 Hemi is an outstanding engine. It has earned a reputation as a reliable and sturdy workhorse of an engine. If you talk to anyone that owns a vehicle with a 5.7 Hemi engine, they will likely have very few, if any, bad things to say about it.

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.

Why do Hemi engines tick?

Fuel. Low quality fuel can cause the hemi tick. Fuels that contain high amounts of ethanol or that are low octane may not properly lubricate the fuel injectors and can lead to a slight tapping or ticking noise. Low-octane gas has also been known to cause an ignition knock in high-performance engines.

How many miles do Hemi engines last?

5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out.

Is the Hemi tick bad?

I owned a 1500 when the Hemi was introduced and it had the tick. At that time it was a brand new engine and people wondered a lot worrying if it was a problem or not. Pretty sad seeing this HEMI tick worrying is still going on 11 years later. There is nothing wrong with your HEMI, please enjoy it.

Why is a hemi more powerful?

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.