400 to 512

Just a note: If you install any stroker kit in a B engine yourself, be prepaired to champher your own main bearings. I built a 473 using a 440 source kit. The first crank I got had too much runout. They took it back reballanced another crank and sent it to me. Just alittle FYI:read2:

This is more of a function of 440Source product than representative of everyone... It's because the radius of the fillet is .250 and not smaller like others'. So the bearings don't fit it well. It's also a problem on the RBs when the narrow bearings ARE used...