gatorback belts

[massie]

Greetings..... Ive got the dreaded squealing belt problem already replaced the pulleys,replaced belt with a gates..... now its noisy again , I can do the sillicone or belt treatment and it will be quiet for 50 miles ir so ... the question I have is for a 99 f350 with single alternator what gatorback will fit no one seems to know and they all give me a different number... i believe the number 4081215 is the right one any thouights or experience with the gatorbacks......thanks

[NIT2WN]

I'm sure this is way too late to help. Anyway, we in the Lightning community run them on the superchargers because of their ability to wrap around a smaller pulley and not slip. I had to change mine due to different size pulley configurations, a couple of times. I don't daily drive the truck as it's a toy. I've had those brand of belts on it since 18k and it has 34,xxx on it now and they don't slip or squeal. I used to be able to ''make it'' slip when letting out of the throttle at the top of 2nd but put bigger idler pulleys to make the belt wrap around the blower pulley better and solved it. They're a great belt to me.