Most human being just desire a automobile from point A to allude B, others want a car for steering experience detailed by a beautifully crafted engine. While every machines have actually the same straightforward parts, the components on the power engine space not basic. The power engine is draft to develop as much power as feasible and the is the scientific research that is still emerging today.

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Dodge has actually several varieties of engine performance including engines on evade Charger, Challenger and also Viper models. This is a 6.4 liter hem V8 engine, and also what every component of the engine does and also how it renders the engine a performance engine.

6.4 Liter hem V8 Is powered By SRT

First, let’s present the 6.4L SRT engine. 6.4L SRT engine is accessible in dodge Charger and also Dodge Challenger range. This engine to produce 485 horsepower and also 475 lb-ft of torque and helps evade Charger accelerate from 0-60 mph in a short four-second selection and will a height speed of 182 mph.



HEMI is a reference to the form of head the the combustion chamber in each cylinder and also is actually a an extremely important facet for engine performance and also power. Hemi is a hemispheric combustion chamber and also its unique shape offers several benefits. One of the main benefits for the HEMI combustion chamber is the palliation in warm loss, so that the fuel in the combustion chamber burns much more efficiently. The 2nd benefit is the there is an ext room because that valves, various other details the are an extremely important in power and performance.

Supported by SRT ; Dodge design Team

“Powered by SRT” method that the engine was especially designed by dodge Street and also Racing an innovation (SRT) team. This team is committed to producing and refining the heat of evade performance models. They are responsible because that the 6.4L SRT engine, the 6.2L SRT Hellcat engine and also the 8.4L V10 engine top top the dodge Viper.

6.4L ; Engine Displacement

6.4 liters is the size of the engine displacement. Most people think the the displacement of the engine as the size of a auto engine, yet actually the is the cylinder volume the the vehicle and / or the volume of air displaced by the activity of the piston. Much more cylinder volume means that over there is an ext room for air, and much more air makes burning greater, and also greater combustion creates much more power.

The 6.4-liter engine is equivalent to 392 cubic inches due to the fact that the two dimensions are different units come express the displacement of the engine. Today in the U.S., liters space the most generally used unit when mentioning engine displacement, yet cubic inches are usually used before the 1980s. 392 cubic inch is the factor Charger model and also Challenger model trimmed with a 6.4L engine named Charger SRT 392 and also Challenger SRT 392.

To determine the displacement of the engine, the variety of cylinders and the dimension of the bore and stroke of the cylinder need to be known. This numbers room then plugged into the formula. While bore and stroke are not pieces of information provided on instead of of the machine, the variety of cylinders.

V8 ; number of Cylinders

This engine has eight cylinders and they are located on the engine block and are inserted in the kind of “V,” climate the term, V8. Cylinders consist of many parts and cylindrical combustion chambers or cylinder heads wherein fuel is burned and also converted right into power.

Because the cylinder is where power is produced, a cylinder and all its components are very important because that engine performance. Overtime designers have changed and repaired various cylindrical parts to assist the engine maximize performance and also handle every the heat and also pressure created.

Performance Section

Now for some unique engine parts that help make this engine a power engine.

Oversquare Engine; Bore and Stroke

Bore and stroke describes the dimension of the engine cylinder. The 6.4L SRT engine is an oversquare engine, which way that the engine cylinder has a bore (cylinder diameter) that is higher than its step (the size or street traveled by the piston native 0-180 degrees), do the boring / punch ratio better than 1: 1 Oversquare equipments allow greater rpm (and hence more power), without too much piston speed.

The bore and also stroke of 6.4 liter evade Charger engine is 4.09 inches (bore) and 3.72 customs (stroke). This provides the engine bore and stroke virtually 1.1: 1. Kind SRT Hellcat engine (other SRT performance engines) has actually a slightly smaller engine displacement (6.2 liters), yet the engine is more powerful (707 horsepower and also 650 lb-ft of speak ) and has a better bore: stroke ratio (1.15: 1).


The engine valve is what controls the air and also fuel intake right into the cylinder and combustion chamber, a very important process. There space two types of valves, inlet and exhaust valves.

6.4L SRT engine has 16 valves v a sodium filled exhaust and 16 hollow stem intake valves. Since exhaust valves space valves that room responsible for bringing hot air out of the burning chamber, they space filled v a mixture of sodium since the mixture cools the air in the exhaust and enables the valve to handle much more heat.

The intake valve is a valve that allows air to go into the combustion chamber and it is less complicated for the valve to open and also the much more air that enters, the larger the explosion. Therefore the lighter the join valve, the much less demanding and also quicker it is come open. Therefore, valves through holes space lighter, and they enhance performance.

Engine Block

The materials used in the machine are really important because that engine performance. Engine performance works really hard and the temperature i do not care very, an extremely hot, therefore the engine demands to be made of materials that deserve to withstand a most pressure and heat.

6.4L SRT engine is make of an iron skirt-in an inner skirt v a crossed key bearing cap, an aluminum alloy header. When the steel block in the skirt and also head that the aluminum alloy room the materials used on the Pentastar V6 3.6L engine, the crossed key bearing cap is a one-of-a-kind performance modification. The crossed main bearing covers are actually thrown right into the last block and also they combine the block for this reason that every little thing remains intact and does not break once maximizing engine power.

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Compression Ratio

Compression ratio is an additional factor the affects engine performance and also power. The only thing that creates engine power is the dimension of the explode of fuel and also air in the combustion chamber and an ext compression create a larger explosion. After the compression proportion starts to acquire bigger, plain fuel have the right to start come ignite before the spark plug lamp up and also this can reason problems. For this reason to avoid that from happening, manufacturers recommend or require greater octane fuel (can withstand better compression prior to being rotate on) on equipments that have actually a greater compression ratio.

6.4L SRT engine has a compression ratio of 10.9: 1, i m sorry is significantly greater than the 3.6L engine compression ratio of 10.2: 1 or the hemi 5.7L engine compression ratio of 10.5: 1. Premium gas (highest octane) recommended because that the 6.4L SRT engine, when midgrade gas is recommended because that 5.7L HEMI and regular gas is recommended because that the 3.6L engine. For an ext information related dodge engines performance visit