yes it will go faster than stock but not carry more weight than stock. most of the reason for doing this is because the drums i had were falling apart and i didn't really want another used one.
these rotors are for 90's Chevy 2 ton tilt cab trucks so they should be adequate for my 6400.
i have spent lots of time looking for rotors, i found 7 that had a center hole close to the same size so i had some sleeves made for the center hole. the bolt pattern was the same on all 7 and it,s not that far off, i could just make the holes a Little bit bigger then they would match.the only difference was the diameter and the depth the different diameters are 11.1, 11.54, 12.26, 14.29. i have the 14.29" ones now.
the machine shop wasn't worried about drilling new holes, they were worried about the hub breaking because of more stopping power.
