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Old 06-05-2017, 01:02 PM   #1
Ahansen15
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Join Date: Jun 2017
Location: Milton, WA
Posts: 1
HELP! I've got a metal humming sound

HELP! 99% complete frame off restoration 1972 chevy K20, 402 BB (rebuilt), T400 Auto

Metallic sounding humming sound, constant between the speeds of 34-45ish mph. Does not change with gas pedal or what gear its in.

What's been addressed so far and ruled out:
-Transmission
-Rear-end
-Speedometer cable
-Tires, obviously...
-Open-ended tubes of metal side steps

Anyone had this random problem before, please help!

Thanks,
Asa
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