The bantering about factory vs aftermarket K frames made me wonder if there had ever been an instrumented test to compare the offerings.

The K frame obviously has to locate the lower control arms and contain the resulting forces but a big part that is frequently overlooked is the structural rigidity they add to the vehicle. The engine bounces around on that thing too.

I don't have a dog in this fight but the engineer side of me is kinda interested.

They should each send me a frame. I'll build a rig and do a test to compare rigidity. There's a non-welded B body K frame lurking around my place that I'd test.

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon