Does anyone know the main jet size on a RB holley 6-port. I am modding mine for turbo and need to know what to go from. I know I could take it apart and find out, but I would rather know, and do everything all at once. I was contemplating calling Racing Beat, but I heard that they don't let this kind of info out. So just wondering if anyone knew, before I hassled them for the info. Thanks

 

Could any carb person just take a guess?