my edelbrock short shifter does that with the knob on or off, like in third downhill no gas just coastin it buzzz's id like to hear a fix on this one, any one have any conclusive answers yet?
i know what it is...its the pivit point. happend to me to, until i got ball bearings instead of that OEM bushing crap. have you tried to tighten where it connects to the clutch shaft linkage? if it still is doing it, might be ur clutch going bad man. have a tech diagnosis it.