Is is a manual or automatic? I had a chevy gasser that made noises like that just before the torque converted imploded and sent fragments to the tranny oil pump, which then completed the falling dominoes cycle. This happened at 60 mph. Only thing salvagable of the tranny was the shell.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Gone and still missed...1982 w123 300D, 1991 w124 300D