B-body frame

[Ceedawg]

I have three 66 Plymouths with what’s left of the frames, real good shape. (Used parts of sheet metal off each) My question, will these fit all the 66-70 b-body’s, with minor changes? I don’t want to send them to the crusher. Say if I found a 68-69 charger, will they fit those?

 

[BeepBeepRR]

66-70 structural metal didnt change much. When you buy AMD floor pans they are for 66-70 So you could use that as a reference. The firewalls would be different between the years and options such as AC/Non-AC, Pretty sure frame rails would be the same. However I have heard that the dodge vs Plymouth rear spring perches are different between the 2. I think an inch different. But there are others with more knowledge than me. They will chime in.

 

[Dodge33]

66-70 structural metal didnt change much. When you buy AMD floor pans they are for 66-70 So you could use that as a reference. The firewalls would be different between the years and options such as AC/Non-AC, Pretty sure frame rails would be the same. However I have heard that the dodge vs Plymouth rear spring perches are different between the 2. I think an inch different. But there are others with more knowledge than me. They will chime in.

That pretty much sums it up.. the only difference in the firewalls is whether or not a/c or non ac. Front frames are all interchangeable, Dodge vs Plymouth. Rear frames all interchangeable between 66-70, but there are factory holes in the 66-67 frames vs 68-70 frames, in the most rear section of the rear framerails. The front cowls, upper and lower are the same, no matter if the car is a 2dr, 2dr post, or 4dr, as they are all welded, and then filled with lead, at the lower base of the A-pillar. Dodge vs Plymouth all the same on cowls. Hope this helps. @Dodge33

 

[Ceedawg]

That pretty much sums it up.. the only difference in the firewalls is whether or not a/c or non ac. Front frames are all interchangeable, Dodge vs Plymouth. Rear frames all interchangeable between 66-70, but there are factory holes in the 66-67 frames vs 68-70 frames, in the most rear section of the rear framerails. The front cowls, upper and lower are the same, no matter if the car is a 2dr, 2dr post, or 4dr, as they are all welded, and then filled with lead, at the lower base of the A-pillar. Dodge vs Plymouth all the same on cowls. Hope this helps. @Dodge33

Yep I’ll keep them for awhile