Rear Floor Pan Clearance

[CT Jack]

Should the rear floor pan touch the very top of the rear frame cross member or should there be clearance? My floor pan touches the frame so I installed a small piece of frame webbing. By doing this I think this is causing the pan to resonate when decelerating. I am thinking of either raising the pan so it clears the frame or installing some vibration dampening material to the top surface of the floor pan.

 

[noyo55]

My late 30 coupe, that I have had since 64, has a strip of some type of webbing attatched to the pan as you have done. I’m the 3rd owner and the body has never been off the frame. I always thought that it was made that way so maybe that is common.