i think there was a H.A.M.B.'r who built a long-rod GMC for their HA/GR a while back using the hudson rods and chrysler flat 6 bearings. did a search but no joy. i'm looking for particulars on this swap, center to center, rod bearing journal diameter and width, compression distance, deck height c to c on the GMC, piston choices, etc.
His name is Ron Golden. Get over on the HA/GR board, it's there- all 347 horsepower!! You'll have to ask him for particulars though.
Shame on you: http://www.jalopyjournal.com/forum/forumdisplay.php?s=&daysprune=60&f=38 You can do a forum jump to get there. You have to scroll down to find HA/GR. Thanks, Kurt