I get the same thing on my '97 around 90. I'm not sure what it is. When
I had it dynoed, they ran it to 110 mph without any problems or anything
blowing up.
Dave
'97 Sport CC V8/5-spd 4x4
K&N FIPK clone
Gibson split cat-back
http://members.xoom.com/tnadoman
>Hi All,
>
>Just a quick question--mainly to the other RT owners, but may apply to
all.
>I have noticed a strange HUM (drone, vibration, ????) from my RT at
high
>speeds. It normally starts about 85-90 and gets fairly bad by 100+.
What
>could be causing this? I don't have any other strange vibrations at
any
>other speed or RPM level. Could it be tires? Alignment? Slightly out
of
>balance drive shaft? How do I explain to the dealer that my truck
seems to
>hum at 100 mph?
>
>Thanks,
>Donny M Hayes
>98 5.9 RT CC Amethyst
>
>
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