Mopar’s new “Hemi” has a “twisted” chamber that displaces 52 cc. What we are showing in the accompanying photos are the first generation cylinder head with the non-circular combustion chamber and the second generation head with the redesigned combustion chamber.

As you can see from the above photos of both the first new Hemi heads, the new so-called Hemi doesn’t have the intake and exhaust valves diametrically opposed in a single chamber as they are in the original Hemi. The combustion chamber itself more resembles those found in wedge type cylinder heads. Despite all of that, the valvetrain looks like a Hemi, the castings are stamped Mopar and the plugs are installed through the top of the valve covers and head.

Larry Morgan told DRO that after proper porting these heads will flow plenty of air and make plenty of horsepower in a carbureted engine. We showed these photos to renowned supecharged engine builder Jim Oddy who thought that the heads as they are now would take a lot of work to be good on a supercharged engine.

Here is the block developed for the new Hemi. It is made in the traditional Mopar / Hemi style. The main caps are dropped below the pan rails and are cross-bolted for additional strength. Morgan uses Billet aluminum main caps in his engines. By the way, the block does have 4.900 bore centers with a 4.680 finish bore.

	The crank and rods for the new “Hemi” are fairly standard Pro Stock style equipment. The lightened crankshaft is by Winberg and has a 3.625 stroke. The rods are by Bill Miller and are fairly standard. The exact rod length was not revealed.

Moroso built a trick dry sump-style pan for the new Hemi.

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