Thread: 440 hemi heads

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The wedge to Hemi conersions were gaining limited popularity a decade or so ago. This was primarly due to the drying up of the then available supply of original 426 Hemi parts.

A couple of outfits did market the conversions and these were gaining some popularity when mother MOPAR anounced the re-release of the 426 and larger inch crate Hemis.

As far as I know this pretty much ended the developement of aftermarket conversions.

Do an internet search and see what you can come up with. If you do find someone still doing the connversions, or even one of the early sets of these heads, make sure the setup is going to be supportable for your build both now and in the future.

One thing that come to mind is if the conversion uses any one-off parts (i.e. gaskets, rockers, pushrods etc) that may or may not be availalbe when it comes tiome to reuild it of if a part breaks down the road. Additionally, as I recall some of these conversions also required unique intake manifolds and Headers.

Here are a couple of links I came across on these conversions.

http://www.hotrod.com/techarticles/52238/

http://popularhotrodding.com/enginem...k/0506em_hemi/