How much smoke is too much?

[EL_Pee]

Yesterday, I went to look at a 57 210 with the 283 and four barrel. There was smoke coming from the breather tube under the engine, which I understand can mean worn rings. But how much smoke is too much?

[BamaNomad]

It's all in the eyes (and nose?) of the beholder... ?

[chevynut]

Smoke from the crankcase is caused by blowby......combustion products blowing past the rings. Check the compression in each cylinder and if it's good I wouldn't worry too much about it. You could always add a PCV valve if it bothers you.