Interesting, my '63 is a very late model car being delivered in August of that year. Maybe it was transitional and that is why it has the 6 bolt valve covers. Paul In a message dated 10/25/2003 8:05:09 PM Eastern Daylight Time, mikanlin62@xxxxxxxxxx writes: > > > Hi all > > I think my post about valve cover bolt holes may have caused further > confusion and I apologize if that was what happened. I should have said > what was possible due to cylinder head interchangeability regarding this, so > that it did not imply that the factory did anything like that. > > My 62 , both my 63's had 4 bolt covers, and had never been disassembled > before. A 64 we dismantled last year had 6 bolt, but I have seen both on 64 > and 65 Chryslers not just Imperials. I cant say that all of these cars were > in fact original engines and that the cylinder heads had not been swapped > for later ones. > > Sorry to cause any unneeded confusion > > Mikey > 62 Crown Coupe > > >