Topic: The difference between a 1940 and 1947 Torsion Bar


Daisy    -- 12-10-2011 @ 12:49 PM
  Can anyone tell me the part numbers or a description of these two parts? Just found out while putting a Columbia on my 47 that I have a 1940 rear end.
Thank you
Kris


TomO    -- 12-11-2011 @ 9:11 AM
  The 1940 Mercury did not have a rear torsion bar. The P/N for the 1947 rear torsion bar is 51A-4264.

The 1940 Mercury had a rear track of 58" and the 47 had a rear track of 50". The 1940 rear end has a one piece drive shaft with the pinion gear pressed on the shaft. The 47 drive shaft has a sleeve that connects the drive shaft with the pinion gear. I doubt that you could adapt a stock 1940 Mercury rear end to a 1947 Mercury without serious chassis modifications.

If you have the 1940 Columbia, check with John McDonald about installing it on your 47 Mercury.

Tom


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