The Ford Barn - View Single Post - what are the differences between 1948 rear diff vs 1936 diff

blucar · 10-20-2020, 11:31 AM

, The '48 differential is not a direct swap into a '36. The '48 is a longer wheel base car than the '36, therefore the torque tube is longer, additionally the '48 is 2" wider than the 36 and the brakes are hydraulic in lieu of mechanical.
The '48 axles, and axle housings will fit and work on a '36 center section, however, '37-'38 radius bars have to be used.
If you want to improve the gearing to 3.78, buy a new gear set in the ratio you want and have a good mechanic install it.

10-20-2020, 11:31 AM	#7
blucar Senior Member Join Date: Jul 2010 Location: Ventura, CA Posts: 2,464	Re: what are the differences between 1948 rear diff vs 1936 diff , The '48 differential is not a direct swap into a '36. The '48 is a longer wheel base car than the '36, therefore the torque tube is longer, additionally the '48 is 2" wider than the 36 and the brakes are hydraulic in lieu of mechanical. The '48 axles, and axle housings will fit and work on a '36 center section, however, '37-'38 radius bars have to be used. If you want to improve the gearing to 3.78, buy a new gear set in the ratio you want and have a good mechanic install it. __________________ Bill.... 36 5 win cpe