360 gear ratio

[eddie1948]

hey guys I found a 55 buick locally It has a 360 ratio could I just change the ring and pinion or do I need the whole rear end for my 48 buick 3 on the tree thank u.:clonk:

 

[theoldguy]

The complete cast iron center section will bolt into your 48 rear end. The axles have the same spline,and the only problem will be if the drive shaft and torque tube are a different length. You then will need to put the ones from you 48 unto the 55 .