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B-Body Rear Frame Rails

Shane2290

Shane2290

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Morning to All,

More of a lurker then a poster but love the forum. In the process of giving some much needed love to a 68 Charger and have a line on some mint rear rails from 69 Roadrunner complete with spring mounts. Question is are these the same ? when you look thru AMD it just says 68-70 B-Body?

Cheers Shane
 
The only difference is the rear spring mount area. Plymouth has a 1" shorter wheelbase than Dodge.
 
Thanks hunt2elk .......see that on part #'s thru AMD now ..there is AD if anyone interested as they are real nice set.
Cheers

Kijiji ad # 1538683176
 
That difference is in the front spring hanger that bolts onto the framerail. The dodge boys moved the front springer hanger bolt one inch rearward in the hanger bracket to get bragging rights on the wheelbase. The framerails are the same across dodge and plymouth B bodies.....2 door and 4 door
 
dsd1967 said:
That difference is in the front spring hanger that bolts onto the framerail. The dodge boys moved the front springer hanger bolt one inch rearward in the hanger bracket to get bragging rights on the wheelbase. The framerails are the same across dodge and plymouth B bodies.....2 door and 4 door
Click to expand...
I ran into this issue when changing rear rails on a 69 Charger. Picked up Plymouth rails with spring mounts. I am about positive we had to get the Dodge version of the rear mounts.
 
The pictures aren't in the same proportion but you can see the differences in the front hanger. Frame rails were the same....the dodge pushed the bolt hole back farther.

Plymouth
upload_2020-12-1_12-23-34.png


Dodge
upload_2020-12-1_12-24-11.png
 
Appreciate all the info .......will just stay with Charger parts so I do not create anymore headaches then needed . Thanks guys
Cheers
 
these are the RR rails for sale .......so if it is just those forward mounts thats no biggie?

rr rails 2.jpg rr rails.jpg
 
It opens your search if you are going for original frame rails. 2 door and 4 door 68-70 are the same rails in the dodge/plymouth B line. I'm not sure on the wagons.

In fact the 66-67 2 and 4 door framerails will fit. The only difference is the 66-67's had a transverse fuel tank strap and the rails had the j-bolt slot on one side and the strap slot on the other....and the drivers side had provisions for fuel filler tubes. I put a 69 charger floor in my 67 belvedere....fit like a glove and matched right up with the 67 trunk dropoffs.
 
Those will do the trick for your charger
 
The rear shackle mounts are different, Dodge to plymouth. The tubes are farther back on Dodge. Easy to fix.
 
My 2cents is get to a factory parts manual and look up the rails, from there you will be able to check the interchange...
 
R/T Boy 67 said:
The rear shackle mounts are different, Dodge to plymouth. The tubes are farther back on Dodge. Easy to fix.
Click to expand...
YEP !!!! RAILS are identical, Dodge to Plymouth, it's the rear hanger section that is Dodge/Plymouth specific.
 
Great info, I had no idea that's how the wheelbase change was accomplished. Don't think that's how they did that with the E body's did they?
 
The plymouth E bodies were structurally shorter by two inches. The difference is in the rear footwell area.
 
dsd1967 said:
Those will do the trick for your charger
Click to expand...
You need to do some more research before telling another member that a part will fit. Yes, the actual rails are the same, BUT he will still have to modify or better yet, replace the rear hangers. Front hangers are no big deal because they just bolt on. Rears are welded.....
 
hunt2elk said:
You need to do some more research before telling another member that a part will fit. Yes, the actual rails are the same, BUT he will still have to modify or better yet, replace the rear hangers. Front hangers are no big deal because they just bolt on. Rears are welded.....
Click to expand...


Eastwood lists the rear spring hanger as 66-70 charger, coronet and Belvedere under the same part number within the same description. I’ve done tons of research on interchangeability of the 66-70’s undercarriage parts to make my 67 come together. Based on everything I have seen I am giving proper information.

If you have proof otherwise by all means please share it. I don’t want to mislead anyone. I would say to compare measurements of our actual cars to a known data point but I removed my hangers during the mini tub. I can’t compare apples to apples
 
Frame rails as myself and others have noted are the same for Dodge and Plymouth

AMD's numbers are 895-1468-L and -R

Rear leaf spring hangers are make specific and AMD's numbers don't help confusion.

Plymouth is 865-1466-2L and -2R

Dodge is 865-2466-2L and -2R.
 
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