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Yikes! And of course everything is already balanced. Different rods or some grinding?

 

Quote from: Mark Bliss on November 16, 2023, 09:31:00 AM

................ I suspect his solution is going to be problematic.

Add me to the list of seeing "problematic"......................

     +1   

     Scott.

If the studs are plain steel, construction grade, I'd guess they are stretching. May need to investigate studs used to anchor heavy shop machinery, presses, etc.

Nice. Never saw the rear of a Meteor. I'll guess not many 61's were made or perhaps few still exist, given tough conditions in Canada.

"The areas you get into real trouble occur when the road has a rolling hump that is not a jolt to the suspension from a hard bump but rather a full bottoming followed by a high rebound basically flying the car."

Well said. Few roads are designed for really high speeds and worse, road repairs, pothole fillers, heavily canted roads (water runoff) and more all conspire to send you sailing off into the weeds even with a well prepared car. Actual road racing courses are carefully made and maintained to avoid dips and rises that can set a car sailing with all 4 tires off the ground.

Btw, going better than 140 in my '70 Mach 1, even with every trick in the suspension 'book' (Ford's own 1970 Boss 302 Chassis Manual) steering got light on a great and flat stretch of road. Ah, the flexi under the bumper spoiler was pretty useless at speed to keep air from going under.  The winning 1970 Trans-Am Mustangs all had much bigger and deeper chin spoilers (custom made, aluminum, rigidly mounted) to keep the front down and avoid that light steering at speeds often approaching 170 mph on long tracks. And yes, I'm also a big fan of doing what one can to minimize under-the-car airflow. 

Some great pics on just how big the custom chin spoilers were on the Trans-Am car:     

http://www.historictransam.com/Drivers/RossMyers70Mustang16.html