Relative to the polyspherical/hemi/semi-hemi combustion chamber question, note in recent magazine articles the 'new' 5.7-liter Chrysler Hemi has added two oddly familiar small 'eyebrow' quench areas canted on the top & bottom of their combustion chambers, reportedly for 'more efficient' burning. Sure looks like a 1970 Cleveland closed chamber..... The EFI 5.7 also now uses dual plugs- mostly for emissions, I think.
|