Originally posted by Mac in SD
I thought I saw a post recently that quoted the most recent NHRA rulebook that stated that the bar must be either bolted or welded to the frame. I only remember because it struck me that bolting it to the frame seemed to be a change from the old rules. I could be imagining this, though. The mind isn't quite what it used to be.
Originally posted by c&cgn
Unless I am misinterpreting this somehow, my NHRA 2003 rulebook specifically says "All vehicles with an OEM frame must have rollbar welded or bolted to the frame; installation of frame connectors on unibody cars does not constitute a frame; therefore it is not necessary to have the roll bar attached to the frame."