[sammyg2]

I've been told this by some very knowledgable people so i consider it accurate:

The street 426 hemi was problematic in stock form, because they had to de-tune it so much to make it tame. With the mild cam ald lower compression and steetable carb it could be a pain to keep in tune, so some folks say the 440 six pack could keep up with it. (I don't buy that).
BUT ....... with a little more aggressive cam and a few tweaks here and there, that choked down street hemi could come to life and regain its position on the top of the heap.

There was a show on speed channel back in 2005 where they took supposedly stock examples of all the famous muscle car motors and put them on a dyno one by one.
The only mods allowed were headers, a different cam, changes to ignition timing and jetting. Everything else had to be stock.

The hemi was last and IIRC, dyno'd at over 700 hp.
There was quite a bit of controversy about that as it turned out it was actually a race hemi with higher compression etc.
Still made for good tele-bision.