567 Frames - interchangeable?

[snakesession]

Hey everyone,

Know you guys can help. I have a 55 2dr sedan. Bought the car on ebay and the seller had a extra frame with no damage.

Are all models (2dr, 4dr, wagon, etc) frames the same? Is there a ID number or other things to look for on the frames to tell what year/model frame I have?

Guess I can measure them both to make sure they are the same. Know that the convertable frame has the X-style brace.

Thanks for your time and look forward to some feedback, Jeff in SC

[warpwr]

The '55 & '56 are the same except the rear spring hangers are different and there is a small gusset in the rear corners on the '56. Bodies can swap between the two years. All are the same except convertible which you noted. I think the front horns are different on the '57 and so they are not interchangeable with the other two years.
My '56 is on a '55 frame.
I understand the vin is stamped into the frame under the drivers seat (on top) but I didn't see it.

[chevman57]

The VIN is stamped on the frame in the driver seat area, but you really have to look for it to find it. Mine was stamped twice for some reason. Terry.

[Blackie]

I'v read some where that they are 2 vins on the frame, I have 2 on mine about 18" apart

[reborn55]

Frames are supposed to be marked in 2 spots from the factory. someimes they are kinda hard to see.