I'm currently in the process of designing a new front subframe for my '68. One measurement that I would like to get is the distance from hub to hub on a stock car, without brakes. This measurement does differ from track width, which is the center of the tire tread.

If someone knows (or has access to measure) this distance I would greatly appreciate it.

Thanks in advance!

i dont know if this helps
http://www.1stgencamaro.net/frame.htm
Rick

Those are great measurements to have. It will help me in the future, although unfortunately won't right now.

So far I've seen measurements ranging from 58" to 60". Most have said it to be "around 59" but nothing concrete.
I've also determined that there is a difference between disk and drum brake hubs. The drum hubs are 9/16 wider than original disk hubs.