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04-04-2017, 01:20 PM | #1 |
Registered User
Join Date: Jan 2015
Location: West Haven, Utah
Posts: 135
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Strange vibration at 60 MPH and above.
Some facts, my truck has a rebuilt 350 and rebuilt TH350, rims are straight and balanced both brake drums in front are new/replaced. The vibration starts at 60 MPH and the tac reads 3000 RPM and 3500 at 70 MPH. I have disengaged the transmission at 70 and the vibration is still there I also put the transmission in 1st and ran it all the way to 4000 RPM with no vibration so I believe it’s mostly likely the drive train? So U joints, drive shafts, or that axle bearing? What are your thoughts? Thanks in advance for your inputs!
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1970 C20 350/TH350, LB God Bless our Troops |
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