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Old 12-14-2013, 01:38 AM   #1
fb1411
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Join Date: Jun 2013
Location: Lancaster CA
Posts: 15
Engine Vibration

I have a 70 C-20 350 when the RPM's are between 1200 and 1500 the engine shake and can be felt in the cab and seen in the steering wheel. I have check the fallowing.
spark to all cylinders at these RPM's
disconnected from trans
removed all moving parts from front of engine including harmonic balancer
shaking always the same

any ideas
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