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Bad Valve?? or bad carb?

1K views 4 replies 4 participants last post by  OldSchool350 
#1 ·
My 1985 350 sbc has ping/knock. The engine was rebuilt about 5 years ago. It has a mild cam and edelbrock intake. It started knocking about month ago. Been parked since.
When i give it gas under load she knocks and has little power. It sounds like its on the driver side. Its not a loud knock its just kinda there. But ive tried everything, adjusting the valves. advancing and retarding the timing. New plugs and wires. But the fuel filter was clogged bad. So i changed that out and still the same. She sounds like its missing the way the exhaust sounds on the driver side.(dual exhaust) but the passenger side sounds normal. I need input here.. Bad exhaust valve??Bad carb?? Spark Knock?
 
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