Drive shaft question

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Mar 2, 2001 | 08:25 AM

chenders

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Joined: Jul 1999

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From: Relocated to San Diego CA

Drive shaft question

I have a 75 f100 4x4. I just bought it and it didn't have a rear drive shaft. The person has been driving it just on the front wheel drive (well at least the transfer case works). Should this cause any immediate problems? and What years would have the same drive shaft? It has a 400ci in it.

Thanks

In the land of the blind, the man with one eye is king.

Mar 2, 2001 | 08:43 PM

Nathan

Posting Guru

Joined: Aug 1999

Posts: 1,485

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Drive shaft question

>and What years
>would have the same drive
>shaft? It has a 400ci
>in it.
>
>Thanks
>
>
>In the land of the blind,
>the man with one eye
>is king.

Thats a tough question, I know the 77s and 79s had different driveshafts. You will have to pay particular attention to the u-joint dimentions.

Nathan

Mar 3, 2001 | 04:21 AM

BigBrownTruck

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Joined: Aug 1999

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Drive shaft question

I second the motion to watch your U-joint dimensions. I swapped the rear end out of my 76 F100 to my 79 and found that I had to swap the pinion yokes because the U-joint size was different. My trucks are all 2wd.

BBT

Mar 25, 2001 | 10:07 PM

chenders

Thread Starter

Senior User

Joined: Jul 1999

Posts: 154

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From: Relocated to San Diego CA

Drive shaft question

I know on my 2wd the yoke can slide in and out an inch or so. But on this 4x4, the rear driveshaft goes from the ujoint on the rear to the u-joint off of the transfer case. Is the driveshaft a solid piece, or how does the driveshaft "float", in case I hit a huge pothole, what does the rear driveshaft do?

Mar 26, 2001 | 12:26 AM

hillbillyk

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Joined: Jul 2000

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From: Elkton, MD

Drive shaft question

there is a slip joint built in to the driveshaft

Mar 26, 2001 | 10:26 AM

Franklin2

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Joined: Jan 2001

Posts: 56,989

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From: Virginia

Drive shaft question

If you run into u-joint/yoke compatibility, you should be able to go to napa and they can get a u-joint to fit by looking in their spicer book. I used a slip joint assembly off a 75 bronco on my front 1980 driveshaft. The cups were the same but the 80 had a wider spacing. They had a stock u-joint that fit perfect with narrow spacing in one direction and wide spacing in the other. I also adapted a driveshaft to a stock 53 pickup rear and besides different spacing this one needed different cup sizes and they had one to fit this too.