Well i went with the sonnax valve and the tricumulator springs in my tranny and i love the shifts but know i am getting a squeel at the upshift points when you stomp on it! Any suggestions on what exactly is causeing it? I am babying it for now until i can drop the pan and take the parts back out

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2001 F150,4x4,EXTCAB,LARIAT,WEDGEWOOD BLUE/ARIZONA BEIGE,7700 PAYLOAD,4R100,5.4L,3.73'S,LINE-X,

 

Well after some reading on the board i noticed that some people are having a belt squeel at shift points and up near redline so maybe it is the pulley tensioner or the serpintine belt. Probably became more apparent once i stiffened up the shifting.... I hope i am on the right track ,and if anyone has a little more insight , it would be appreciated

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2001 F150,4x4,EXTCAB,LARIAT,WEDGEWOOD BLUE/ARIZONA BEIGE,7700 PAYLOAD,4R100,5.4L,3.73'S,LINE-X,