426 Hemi Blocks are back!!!

BIGWILLI said:

It is wrong with Deck Height? Stock Hemi should 10.725“. Can anyone say me, Casting number same as original Hemi (2468330)? Can anyone write what is quality of Block?

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snakeoil24 said:

Gen III hemis as called do not have hemispherical Combustion chambers. They have modified wedge chambers similar to a polysperical chamber. The Gen II head is a true halpf of a sphere.

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Richard Cranium said:

Actually, the old 392's were a true hemisphere & the later 426 had the exhaust valve had to be placed slightly offset to be able to fit between the shock towers.



"Unlike earlier performance engines, the Street Hemi came down the line complete with exhaust manifolds; the Cross-Ram engines had to have their manifolds fitted later. The combustion chamber had been tilted to prevent the exhaust rocker from being too long, resulting in a narrower engine, so they could do a standard body drop in the Dodge Main factory."


https://www.allpar.com/mopar/hemi/hemi.html

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snakeoil24 said:

I did not know that wow you are up to date crack head

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snakeoil24 said:

Very simple the combustion chambers on gen III are wedge style. The Gen II and Gen 1 are Hemispherical a true 1/2 of a ball for simple terms. Gen 3 have squish areas on both side of valves

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