Stares and Glares

[Biggie™]

Originally Posted by nsmitchell

The lower picture is of a pentroof hemi design head. The pentroof which uses 4 valves instead of 2 is actually better than the regular hemi that dodge uses. (allows for bigger openings for inlet and exhaust) They both have hemisperical heads. Hemis are the most efficient combustion chamber design, so that is why they are used by just about all engine makers today.

And you get the BIG gold star!