Carabinerx

Well it’s a little too soon to tell but I cut up a can an was able to fit some small squares under 3 of the 4 corners where the mount meets the crossbar, so as I suspected it does not sit flat there. It has pretty much solved the problem, certain rpms at about 6mph but below 12mph will make it happen but so far it seems to have helped

Griffyorcono

Alright, this is a stupid idea but common I'm trying to be creative and fix your problem. take the mount back off and on the plate where there is a gap put some silicone on it (enough to make it squeeze out when you torque everything down). This will work better than a soda can because silicone is made to fill in gaps. I also think this would be best because silicone will absorb vibration instead of causing more of it like a soda can would.\

I am only trying to give you tips because I can see you don't want do what is required to properly fix the problem. what we need to figure out is why the issue is occurring and what needs to be replaced to properly fix the problem.

Carabinerx

i would love to properly fix this, but I leave for Colorado tomorrow morning, there’s no more time, I don’t have a garage anymore, summit racing sent me the wrong part and this aftermarket duralast mount is the only part I could find in town, except it isn’t totally flat or shaped correctly on the bottom.

the reason for the can is because transmission shims are usually aluminum, and this is a very small amount of gap, it doesn’t need to dampen the vibrations it needs to make a tight enough seat to eliminate them.

at very gentle take off and idle it’s been eliminated, but we’re dealing with a lot of weight and a rubber pivot point, so at certain speed the weight shifts and the corner(s) that aren’t sitting tightly on the cross bar will buzz from the rpm of the transmission.

at this point until I can put a mopar mount in I don’t think there’s much more I can do. When the brake line was being replaced yesterday a mechanic checked out the drivetrain and said everything was fine, and without a new mount to swap it with not much they could do on short notice.

the silicone is an interesting idea, I just don’t know what amount of force we’re dealing with if it would hold, maybe the combo would do it