need belt size help asap

[black venom]

I have a whipple 2.3 with a 3.0 pulley 3 100mm and 1 92mm billet flow idlers and need the correct belt size 4080750 did not work either. also the alternator pulley is stock. your help is appreciated.

 

[redfr03svtsnake]

have you tried going to the auto parts store, having them measure the belt, and getting a belt size that is close and going from there?

 

[slvrbk04]

Belt Size

Use a Gates K080755.