A: The 327, Buick motors, and AMC V8s till '73 all used an adapter ring to the Nailhead TH400. I saw, but didn't get a pic of a 232 with TH400 (pre '72) that also had an adapter ring. I ran into difficulties last summer when I was going to get a '66 J300 with OHC 6 and auto so it was never finished. (I had a spare 4.0L and AMC adapter ring for the TH400) From: farna@xxxxxxx Subject: Re: No Subject To: mail@xxxxxxxxxxxx Message-ID: <ADVANCES62FRaqbC8wS00000034@xxxxxxxxxxxxxxxxxxxxxxx> So the Buick 350 in Jeeps used an adapter too? I thought only the 327 used the adapter. I guess the reason was the trans they were selling Kaiser Jeep at the time. It was the "universal" or "export" model. I guess GM started seeling the nailhead pattern case to overseas customers to keep volume up (just a guess!), then had to continue making them for supply/replacement reasons for a while after the nailhead went away. On April 20, 2005 mail-return@xxxxxxxxxxxx wrote: > actually when i said 350, i meant the engine not the tranny. > > " which is a pattern all of it's own aside from BOP or Chev > > yup, but the engine is bop - hence the adapter. used to puzzle me why > they didn't just use a bop case... > ________________________________________________________________________ > Andrew Hay the genius nature > internet rambler is to see what all have seen > > adh@xxxxxxxxxxxxxxxxx and think what none thought