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350 vibration
I have a 84 Chevy 4x4 with a 350 auto. At idle it vibrates and when revved up you can feel it vibrate. I thought it was missing but you can put it in gear and give it gas and hold the brake and it does not miss. I replaced the plug wires and the plugs looked good. Could it be the harmonic balancer? I need it smooth because I am trying to sell the truck.
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