Screech sound

[SVT DAN]

Idk if this counts as a TOB issue. Last time mine went out it only made a noise when set at idle. I'm hearing this loud ass screech during boost. Clutch engaged heard it in third going into boost not quite WOT. If its the TOB good ill get it changed when I put in gears and clutch.

 

[4601S/C]

My first guess would be the supercharger belt.

 

[SVTDice]

It may be the idler bearings. Honestly spray some water on the belt, If it goes away then its the belt if not you may want to look somewhere else.

 

[Anabolic]

yeah I would say belt slip as above. especially under higher rpms. Replace your belt with the green gates HD belt.
Have one on mine. it is THE SHEEEEET