Challenger Frame Dimension Accuracy

[rhamson]

I have been plugging along with the body work on my '72 Challenger and thought at one time I had adjusted the right front rail back to its' proper height. Which I did successfully. I have discovered that the rail was pushed up by the floor and is out of level about a 1/2". I set up my trammel jig to measure it at the proper points according to the chassis diagram in the chassis service manual. The measurement diagonally from the cross member to the back bolt hole where the K-frame attaches to the frame measures 57-1/8". It is equal on both sides. The measurement should be 57-1/2". Does anybody know if these dimensions were that accurate from the factory? I still need to make a pull on the frame at the floor to bring it back down to level out the frame from one side to the other. I have tried to get a body shop locally to bend this but they all bow out as they are dedicated to only collision repairs of newer cars. Classic line I have been given is it a unibody? We don't do unibody pulls for old cars. Just about every newer car out there they are repairing is a unibody. Any thoughts? Anyone?

[torredcuda]

3/8" off seems a little much even with `70`s tolerances - are you sure you are measuring correctly? It is absurd that a body shop will not pull an old unibody as it`s no different than a new one - just clamp it down at the pinch welds and pull. Maybe they just don`t want to be bothered with it - find another shop.

[JS29]

@rhamson  Unless your E-Body has torque box's I would not use pinch weld clamps on it! You can however use full perimeter frame clamps on the frame rails, and clamp it to the table.  I have used this method on a chief E/Z liner before.