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4l80e Torque Converter Whine/Squeal/Whir
Noise randomly began ~3000 miles after trans swap. Whine is still audible when driving normally at all rpms, although quite faint. Valve body is a reverse pattern billet transbrake with fixed line pressure set to ~180psi. Torque converter is a single disc billet lockup 4,000 stall custom converter.
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