Re: vibration maintaining cruising speed
Check if any exhaust equipment is close to anything. At that speed and torque, an exhaust part can lightly touch something and cause a noise. Coasting and harder acceleration could change the light contact and reduce the noise.
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~Steven
'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper
Simi Valley, CA
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