Help identify purpose of chassis dampner
 

Hope some one can help me identify the purpose of a chassis dampner?? under the floor of my 1973 Satellite/roadrunner. What it is , is a large hunk of cast iron (about 20 lbs) and rubber mounted to the under side of the floor. It's around a foot long and 3 inces wide. It's mounted by 3 bolts to the top center of the floor hump and hangs down the sides of the drive shaft an inch or two. Definately not around the drive shaft enough to offer any protection from a broken shaft. Can't figure out what purpose it possible serves. Part number on it is 3466722-1. Thanks for any insite offered.

There are huge libraries of books written on things like wave action and harmonic vibration. I'm no engineer, but that is what it was for---something in that engine/ drivetrain / chassis combination created a harmonic vibration, and that was to dampen it.

Thanks for the reply
 

Thanks for the reply. FIts what my neighbor told me tonight. He is a tranny guy. Said he has seen this very thing on Mopar automatic transmissions before but never mounted to the floor. I'm thinking maybe to the floor as this was a council car originally.

At any rate, thanks again for the reply - on the shelf it goes unless I get wierd vibrations from the 4 speed thats going in.