I just installed a new Gator Back SC belt... because it squealed at WOT shifts with the stock belt. It still does it and now as low as 1/2 throtle now, since I just did the Factory Tech Valve Body . So I guess my squeal at shifts is the accessory belt (I did know that it could be either belt). Just wishfull thinking it was the easy belt to change! Not looking forward to changing that accessory belt.. rumor is a pulley has to be removed to do it

Also my new SC Gator Back Belt has a loud constant whriling whistling sound. Will this go away as it wears in, should I wait or should I go back to stock???

Thanks

 

You may have noisy idler pulleys???

https://www.f150online.com/forums/sh...=pulley+grease

Dan

 

Thanks for all your help Dan.
The loud constant whriling whistling sound started right after the install of the new GB SC belt. I guess the new belt bring out the pulley noise. I will look into it.
Thanks for the link

 

My truck squealed at wot shifts also, so i put a Gator Back s/c belt on. It still
squealed at wot shifts, so i had a Gator Back accessory belt put on Friday .......
no more squeal.

FRITZ, Stock Silver 2001 "L" BaBolt's s/s tips

 

This is funny cause the gatorback belt says something like "The quiet belt" on the package. Oh well if its the accessory belt then I guess it can be quite too if you replace it.

 

i had the same problem after i installed the FT VB. i haven't tried to fix it though.