I finally got my 455 pulled from my 1973 olds 98,,,,Now off tot he machine shop for a full rebuild..I already had the heads and intake redone...Just couldnt get myself to put it back together without rebuilding the bottom end....I am not going to do anything high performance wise just basically going to rebuild in stock...The machine shop that is going to rebuild it came over today and pulled out all of the cylinders,,,All of the rings looked good...So in the end it was most likely the valve seals that was causing the smoke..,,,He did measure the cylinder and said they measured almost perfect from what the shop manual said they should.Will let you know how it comes out,,

 

Cool, i am also building a 455, have fun!

 

Awsome!