On Mon, 9 Feb 2009 10:41:56 -0500, "Eisboch"
wrote:

I liked the old days when a Nascar stock car race pitted 427ci Fords
against 427ci Chevys which were both blown off the map for a couple of
years by the MoPar 426 Hemi.

Hemi is somewhat overrated. If you have a flat top piston, the
combustion chamber is hemispherical. If you want high compression, you
used a domed piston and get a combustion chamber that looks like the
peel from half an orange. It looks better in a long stroke engine, as
the piston can be flatter for any given compression ratio, but today
most mills are short stroke.

Casady