Well my roush belt took a **** so I got a Dayco Poly Cog belt and it shreaded within the month. I now have a gaterback belt and it didnt shread but it did jump and came completely off. My pulleys look lined up but will double check. Do u guys recommened a replacement tensioner or should I runn a smaller belt? Im new to the boost mod..lol...

BTW i have a roush tvs kit..

 

As far as I know, the HD tensioner is a must.

 

tim z just added a smaller belt to his roush.. pm him for what size he's running...

 

Check my thread Bro, i found the Belt that came with mine was too long,

I put a Dayco poly Cog 5061115 Belt on and its working/fitting great.

I also ordered a Gatorback part # 4061112

NAPA belt is # 25061115

EDIT* I hope the guy gave me the right goodyear belt, im thinking it should end in " 5" also but i will see when i get it.

Try the Dayco First, i know it will work.

If it bumps off your pulleys are misaligned im betting.

 

I looked around a while back but couldn't find anything...got a link?

 

I can't remember where I read it but I wanna say it was something Blownchevy said.

If I'm just remembering wrong, sorry in advance