falco vs ford driveshafts

[bdj66]

Are the Falcon driveshafts the same in length compared to the 68 mustang with a C-4 in it. I was wondering if I could swap 7 1/4" rear ends to gain Falcons better gear ratio?? Although we both have 4lugs, I know the 4 lug bolt set up on the drums is different, I am willing to get them machined. Any info is appreciated.

 

[rbohm]

8) no the shafts are different lengths, but the u-joints are the same.

 

[bdj66]

Can you tell me the lengths by any chance? With that being the case how expensive could it be to cut/machine the driveshaft assuming the Mustang is longer? I have a chance to buy a Falcon 7 1/4" rear end with a 3.20:1 ratio. But don't know if it will end up costing more than just having mine rebuilt with the higher gear ratio????

 

[rbohm]

8) if you are just swapping rearends you dont need to do anything with the driveshaft. the falcon shaft will be longer than the mustang shaft by about 1" though.

 

[xctasy]

I remember sbout 53.5 inches for the Stanger, and 54.5" for the roundy body pre 66 Falcon.

It does depend on how you measure, though!

 

[bdj66]

So can it be done? Will I have to worry about the bolt pattern on the drums? Need new wheels? What is the best way for me to do this swap? Sorry I have asked these questions in more than one forum, but I am rather new to all this and want to be efficient in what I spend, while still improving the cars performance.

 

[bdj66]

Oh yea what about the width of the rear ends?