i have a 292 with g code heads a mild cam a eldblock 4 barrel they motor is a rebuild and it is 60 over car was running great for a year after the motor was done i was coming back from a short trip when it started running bad i pulled the valv..e cover off and one push rod was bad i replace it.also readjusted the valves put new plugs in itand a new coil and new protix,s when cold it sounds fine but when the temp gets to 140 its startes to pop from the carb and will shoot a small flame out the tail pipes any ideals

thanks for any help

teddyp