Originally Posted by
AlaskanEx
i've noticed this with all ford mod motors i've been around after a few years. 5.4s and my 6.8. somtimes at WOT shifts i'll get a quick sqeel from the belt slipping. doesnt do it any other time. the belt looks good but i think it may be factory so its on its last legs i'm sure. is there any cure for this? its funny it doesnt do it all the time though. anyone else have this issue? i may have it alot more as i have mine at WOT pretty much everywhere i go lol the big girl takes alot of motovation.
just curious on others opinion of this.
You've got large rotating mass from all of the accessories and when the engine rapidly changes RPM,those items want to stay in motion. It's normal for the belt to slip a bit on crisp upshifts/downshifts. You can replace the belt with a Goodyear Gatorback and that will help eliminate some of the "squeak" noise.
JL