I shouldn't even worry about this, since I sold it already, but the new owner has been investigating why the 350 in the Blazer smokes.
At start up, good size cloud of smoke - valve seals - no brainer.
At Idle when up to temperature, the driver's side would smoke enough to be embarrassing to me. He's a local, and has seen how bad it smoked before I put a bottle of lucas in the engine a day before I put it up for sale, which reduced the amount of smoke by more than half!
He pulled the plugs on the driver's side, and said they are a perfect tan color - not oily.
Would the rings cause smoke at idle? I don't know if it smoked while driving (or how bad it did), for obvious reasons. ...and if it is/was the rings, would the plugs be clean and would the lucas help clean it up like it did?
He's looking into replacing the engine because he doesn't want to get into a rebuild... but is trying to troubleshoot it before he does so.
If it matters, it's a 91 TBI motor I put a holley 600 vac sec on, and it had the provisions for a fuel pump in the block. I also changed the cam, timing gears, and oil pump with a HV model... I left the short block alone; it all looked fine when I put it in. It didn't smoke initially, but gradually did, and got worse, as time went on.
What do y'all think? (besides don't worry about it - it's not my problem anymore)
*note* I did tell him that I put the Lucas in it, and even listed on the "for sale" sign that it smokes - full disclosure; I didn't try to hide it from him or the prospective buyers.