after more searching I found this article on the 440 six pack
http://www.moparmusclemagazine.com/techarticles/mopp_0801_mopar_six_pack_tuning/index.htmlwhere it says
Quote:
As expected, when the car was hooked up to the O2 meter, it showed the carburetors were running a little lean and some adjustments needed to be made. The center carburetor was not that far off-just one size up, from a 65 jet size to a 66. But the outboard carburetors jumped from a staggered 78/82 configuration to 84s at all four locations. Now when you mash the pedal on this big-block, it shows no signs of timidity. It just goes!
so thats probably where they got it from
