Need urgent help with belt size!

[Venomous03]

I am putting my car back to the stock pulley for a warranty visit. I have a questio about the belt size. I have 4 billetflow idlers (Thanks Doug!) and am putting a stock 3.65" pulley back on. My question is what belt size would I use with 4 idlers and a 3.65" pulley? Please help, I need to get this swapped out to make my appointment time. Thanks!

 

[badboy]

Put the stock pulley back on and try to install the stock belt (which I assume you still have). If it is too short, you can estimate by how much. Then add the extra needed length to get the proper belt. I assume you are going to take off the 100mm snub idler. If you have the 92mm BF idlers for the other three, then the stock belt will fit. I think it is Gates K080740.