[Niceguy]

Wow, what a Wonderful way of putting it, TUNDRA 5.7 ROCKS, BIGTIME!!! I truly appreciate your honesty & knowledge, Thanks!

The name "Hemi" refers to a hemispherical combustion chamber, that's it. It has nothing to do with the valves or the air flow through the head or quench area.

I'm not saying the Hemi is as good or better than the 5.7L in the Tundra, but if the Tundra 5.7 has a hemispherical combustion chamber, then according to old school lingo, it is in fact a "hemi" type engine...not to be confused with the "hemi" name brand of Chrysler engines made by Daimler-Chrysler.

Furthermore, a "hemi" engine is not so un-common these days. My old 4-cylinder Acura RSX had a "hemi" engine...meaning that the cylinder head had a hemispherical combustion chamber and the plug seated in the cylinder head, not the engine block. Chrysler coined the term "hemi", so now anyone who hears that word associates it with being a Chrysler engine, which isn't accurate anymore.

 

[Niceguy]

also you would never see a hemi with 4 valves per cyl, the heads would have to be huge and radical to house the valve train........

The name "hemi" only refers to the combustion chamber/quench,...it has nothing to do with the valvetrain. A "hemi" engine can most certainly have 4 valves per cylinder, no problem at all.