Sub Frame Connectors

Bigasawhale2

Member
Joined
Jan 25, 2014
Messages
55
Reaction score
51
I used many of the threads on this site, as inspiration for my version of sub frame connectors.


My Goal(s)
Stiffen the car, used the connectors to lift the car if needed
Use and Maintain the factory bolt location in the sub frame
Once all is proven to work well - a couple of strategic welds, in the back frame rails

Share, to the C Body community
ScreenHunter_01 May. 11 21.00.jpg
ScreenHunter_09 May. 11 21.03.jpg
ScreenHunter_10 May. 11 21.05.jpg


ScreenHunter_01 May. 11 21.00.jpg


ScreenHunter_09 May. 11 21.03.jpg


ScreenHunter_10 May. 11 21.05.jpg
 
Last edited:
Looks like you took some time to do a thorough job.

I’ve thought about these for my Imperial but wasn’t sure how the rubber mount for the stub would affect it.
 
This needs a through explanation...
Welding to the front stub frame which is not solidly mounted to the car.....
Welding to the rear frame rails which are very solid to the car.......

Something has to give,,, and not in a happy way.....
 
I just don't understand the need for sub-frame connectors given how strong the uni-body is on C Body's.
 
I did something very similar on my 65 Fury convertible. I cam straight off the rear frame rail forward. I bolted mine to the front sub frame, in case I ever had the need to remove it. I drag raced my Fury. After a day of racing I could put my thumb in the gap at the rear of the door/body. After putting the connectors in, I never had that problem. It stiffened things right up. This was about 30 years ago and I haven't had any problems with flex since then.
 
I did something very similar on my 65 Fury convertible. I cam straight off the rear frame rail forward. I bolted mine to the front sub frame, in case I ever had the need to remove it. I drag raced my Fury. After a day of racing I could put my thumb in the gap at the rear of the door/body. After putting the connectors in, I never had that problem. It stiffened things right up. This was about 30 years ago and I haven't had any problems with flex since then.
Can you post a picture of what it looks like?
 
Can you post a picture of what it looks like?
I will try to get pics of it sometime this week. It is basically a 2x3 square tube going from the frame rail forward. It isn't attached to the floor anywhere. Smaller tubing would likely work, I just used what I had back then.
 
mine. 2x4 rectangular heavy wall. holes are for seat bolt access. bottom of subframe was rotted off so these extend in. the sides and bottom of the sub repaired around the connectors with 2x2 angle.
frame 001.JPG
frame 003.JPG
excuse the light. rears have internal lug plate so springs are bolted through from outside. like Badvert65 done early '90's with material on hand but happened fit very nicely. apologies to bigasawhale2 for partially hijacking your thread. gotta say your connectors are much nicer than mine and very well presented.
 
Last edited:
This needs a through explanation...
Welding to the front stub frame which is not solidly mounted to the car.....
Welding to the rear frame rails which are very solid to the car.......

Something has to give,,, and not in a happy way.....

The earlier C's, the stub frame was bolted solid the the uni body, not until the later torsion ride that they had cushion mounts.
 
I know my 65 is directly bolted. My connectors look just like the ones in Rags post except on the sub frame end, I welded a flat plate to form a "T" and bolted the "T" to the sub frame.
 
my car was severely rotted at each end so i had nothing to lose. bolted the springs and welded the torque boxes first leaving the fronts hanging an inch below the sub. when done at the rear i jacked the fronts up into the sub an welded them so that that body was preloaded upward at the center like a flat bed trailer.
 
Last edited:
Great illustrations and ideas shown here. Definitely adding to my Newport.
The other idea is the torque boxes the convs and hemi powered cars had at rear spring mount. Does anyone have a pic of those?
 
You know, my 65 convertible does not have the torque boxes. I have looked at three other 65 Fury convertibles and none of them had them either. It is something I have wanted to add.
 
You know, my 65 convertible does not have the torque boxes. I have looked at three other 65 Fury convertibles and none of them had them either. It is something I have wanted to add.

If you have some fabbing skills they can be made.

I did that a few years back now.
I was fortunate to have the rear frame rails out of the car at the time which admittedly made this much easier.

Use a few cereal boxes to mock up templates then cut your materials expecting to scrap the first few until you get the angles correct.

They turned out pretty nice & strong as all get out having used a bit heavier gauge than the OE boxes
20151001_200435.jpg
20151001_200442.jpg
20151001_200454.jpg
20151001_200510.jpg
20151001_200519.jpg
20151003_155528.jpg
20151003_155535.jpg
20151003_155542.jpg
IMG_0797.JPG
 
This came up just at the right time!
I have been thinking the connectors for my -67 Imperial due the change from ht to convertible. The body would be much too "elastic" without any added support under the floor.
Now i just need to copy your solution.:thankyou:

I don´t know if Chrysler has made any changes on body between the ht´s and convertibles? If not, these should be added to any convertible..
 
Back
Top