Quote:
Originally Posted by Piotrsko
It's not a hemi, just a trademarked name.
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Which does make it a Hemi with a capital H. It's just a name like you said, like Powerstroke or Vtech. No engine actually uses a hemispherical combustion chamber, it would be terrible as a hemisphere is exactly 1/2 of a sphere and you would have about a 4 to 1 compression ratio. The old Hemis weren't hemispherical and neither are the new. What they do have is opposed valves which is really the secret. That is what Nascar handicapped, that is what improves flow. The latest Hemi combustion
chamber design is an improvement over the older ones. It's not like they made the changes because they didn't want a nice pretty dome. But agreed, it's just a trademark they can put on anything they want.