I just bought an 83 2.8 carb fed camaro.
the thing is she ran just fin the other day now it seems like im missing a cylinder but only at low rpm's below 2700 once its above that she runs smooth i just changed the plugs,wires,rotor,and the cap. put an o2 sensor in about three weeks ago has new air filter and im going to get a fuel filter tommorrow anyone got any ideas Thanks

 

check the plug wires and make sure there all on right. sometimes the connection is not complete but looks that way and the spark has to jump twice.

 

the carb may need to be adusted

 

check vacumn lines.