What is a HEMI ?

Frequently Asked Question

Picture of a cutaway 426 HEMI engine.




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Mr. HEMI's -- What is a HEMI ? . . .

Many who are unfamiliar with Chrysler's famed 426 HEMI engine are confused as to just exactly what is a HEMI.

A HEMI is an engine with a hemispherical (dome shaped) combustion chamber. The reasoning for this is that it enables the engine valves to be positioned to allow the fuel-air mixture to flow efficiently from the intake to the exhaust and produce maximum performance, especially at high RPM's. Chrysler introduced the concept in American cars in 1951 and it evolved to the now famous 426 HEMI engine in 1964. See the graphic file below to view the "inside" of a simulated 426 HEMI engine. The 426 HEMI engine also had many other features for strength and performance. These issues will be discussed in detail on this site in other areas.

There is no other engine in the world more famous for performance than the 426 HEMI !!

MoPar to Ya !!


This graphic file shows the HEMI design from the inside !!

Ride the top of a HEMI piston !!

More to come . . .


Please note that Mr.HEMI currently has an extremely limited capability to respond to questions, but will try to keep any interesting E-mails for publication in the future.

E-Mail comments on this site to: MrHEMI@426-HEMI.com

MoPar to all !!!


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