There are ( 8 PISTONS ) in a V8 engine
520
No one knows who invented the hemi engine. The Welch motor car in 1904 made the first use of it and Chrysler corporation continued to use it. Porsche also has used the hemi engine a lot.
I am not pretty sure but it is to run the engine.
Either steel or aluminum, or both, could be used to make engine pistons. Aluminum is lighter but not as strong.
Chrysler introduced the hemi engine for the model year 1951 and it was called "FirePower" back then.
Depending on what the engine was used for, most likely dish top pistons. But flat tops ARE possible.
The main inside the engine pistons are made of aluminum or in some heavy diesels steel Clutch cylinder pistons can be made of plastic Brake pistons can be made of all three
Hemispherical cylinder heads have been used since at least 1901. However, the Chrysler HEMI was released in 1954, with the legendary second generation 426 HEMI released ten years later.
The term rotary piston engine can have several meanings:Rotary engine, the piston engine that rotates in operation, as used on World War I fighter aircraftPistonless rotary engine, the engines which use rotors or rotary pistons instead of conventional reciprocating pistons
Hemi actually is a short form for Hemisphere. The term refers to a hemi engine which has been described as an internal combustion engine in which the combustion chambers are of hemispherical form. For many centuries hemispherical combustion chambers were used in cannon and mortars and these chambers were initiated on some of the earliest automotive engines before the concept of nternal combustion engines were proved.
The 360 that Chrysler used was not a Hemi.
the heads. the tops of the combustion chambers of a HEMI engine has a hemispherical shape whereas in a non-HEMI engine, they are flat. for more info, read this: http://auto.howstuffworks.com/hemi1.htm The rounded concave hollow of the cylinder header allows for larger valves to be used so the engine can breath easier and produce more power over a regular motor of the same displacement.