Topic: 1937 3.78 gears in a1935 housing


Fordfan1    -- 03-19-2012 @ 2:46 PM
  I am installing a set of 1937 3.78 gears in my 1935
differential.I need to know the correct side carrier bearings to use. The 37 unit uses a larger bearing, will they fit in the 35 housing?

This message was edited by Fordfan1 on 3-19-12 @ 8:04 PM


ford38v8    -- 03-19-2012 @ 7:04 PM
  I've been told that there will be a little machining to do for this swap.

Alan


40 Coupe    -- 03-20-2012 @ 5:29 AM
  32-36 Carrier bearing (two needed) 18-4221 Timken 22168
37-47 Carrier bearing (two needed) 68-4221 Timken 25578

32-36 Carrier race (two needed) 18-4222 Timken 22325
37-47 Carrier race (two needed) 68-4222 Timken 25522

Check these numbers for the size needed at:
http://www.timken.com/en-us/products/Documents/SealSpecGuide7533.pdf

This message was edited by 40 Coupe on 3-20-12 @ 5:32 AM


supereal    -- 03-20-2012 @ 12:59 PM
  Unless you are building a car for show, consider adding an overdrive unit instead of a rear gear swap. The OD allows good low speed power, yet can easily reach hiway speeds. I've had one for about 15 years that gives me a 1/3 reduction in engine revs when engaged. That is why the Colunbia axle was so popular.


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