Can someone shed some light on me regarding sleeves?  I was talking to my father in law about rebuilding my 272 this winter and he mentioned that the Y's were sleeved and I should go to a non sleeved motor??  I tried to search the forum for insight but didn't find what I wanted.  Is there a problem with sleeves?  Do I have them or need them? 

I'm just trying to turn my little ol weak 272 into a nice 292 with a 312 crank, a Y-284S cam and  ECZ-G heads.  Thats not to much to ask is it???

Warsaw, IN