6772FordFseries
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SWB trucks: 1-piece or 2-piece driveshafts?
OK folks, we need some clarification here. In all the '67-'72 SWB (short wheelbase) trucks I've seen, I've never seen one with a 2-piece driveshaft with a carrier bearing, like what the LWB trucks came with. They've all had a 1-piece shaft, with the driveshaft going directly from the transmission tailshaft to the differential.
However, I was talking with Chris this evening, and he mentioned that he's had several SWB trucks with a 2-piece driveshaft and carrier bearing. He swears that it looks stock. He's going to get some pics tomorrow (hopefully) so I can see for myself...but I'd definitely have thought that it wouldn't work. The rear shaft would have a MAJOR angle connecting to the differential, which would cause some serious U-joint binding. My thoughts were that a previous owner broke his original 1-piece shaft, so he got a 2-piece from a LWB truck and shortened to to fit the SWB. However, what are the odds that Chris has had THREE trucks with this modification done?
So...has anyone else seen (or presently own) a SWB truck with a 2-piece driveshaft?
Here's the only pic I could find of mine still installed:
Last edited by 6772FordFseries, 7/9/2004, 9:35 pm
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Keith
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6/19/2004, 11:56 pm
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6772FordFseries
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
I did some research in my Master Parts Catalog, and found the following two diagrams.
Driveshaft, Automatic Transmission - F-100/F-250
Short Wheelbase Driveline - F-100/F-250
Now the first diagram DOES show a one-piece shaft, but doesn't seem to differentiate between SWB and LWB trucks. The second diagram only adds to the confusion, because it shows a THIRD type of driveshaft, labeled "Short Wheelbase Driveline". It shows a bolt-on yoke for the transmission, and a slipping mechanism built into a one-piece driveshaft!
Now we're really confused...
Last edited by 6772FordFseries, 7/9/2004, 9:36 pm
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Keith
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6/20/2004, 1:36 am
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occupant272
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
I always thought F-100 trucks were one-piece and F-250 trucks were 2-piece, regardless of wheelbase...
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6/20/2004, 4:37 pm
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F10YKN67122
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
Mines a LWB and its one long drive shaft with a small linkage immediatly before entering the rearend diff.
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Michael,
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6/20/2004, 6:32 pm
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6772FordFseries
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
quote:
occupant272 wrote: I always thought F-100 trucks were one-piece and F-250 trucks were 2-piece, regardless of wheelbase...
The type of driveshaft should be due to the length of the wheelbase, as (so I've always understood) the LWB trucks couldn't handle the extra length of a 1-piece shaft. I talked with a Ford guru today who's been messing with these trucks all his life, and he says as far as he knows, all SWB trucks had a once-piece shaft. This is definitely going to take some time to figure out, I think. One thing we have to keep in mind, too, is the fact that with the age of these trucks, and the numerous owners some of them have had, some of the...um...well....less-than-rocket-scientist previous owners might have cobbled something together over the years, from whatever they had laying around, just to save a buck or two.
quote:
F10YKN67122 wrote: Mines a LWB and its one long drive shaft with a small linkage immediatly before entering the rearend diff.
Really?? Is there any way you could post a pic of that?
Last edited by 6772FordFseries, 6/20/2004, 9:25 pm
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Keith
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6/20/2004, 8:34 pm
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F10YKN67122
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
nope. Don't have a camera. Sorry.
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Michael,
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6/20/2004, 8:43 pm
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occupant272
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
I looked under mine, sure enough, '70 F100 LWB and it has a 2-piece. Funny because this truck was a 240/3-spd LD from the factory, kinda light duty to have a 2-piece.
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7/9/2004, 8:39 pm
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MudinMan4x4
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
as far as i know "Most" LWB have 2 piece and SWB has 1 piece...I think the angle would be to much sence the truck is alot shorter...but my mind is open if you could show us....... :)
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7/9/2004, 10:00 pm
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68F250
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
I think it has to do with what transmission was installed. The SWB trucks I've seen had the funny slip thing with no carrier in the middle of the bolt-on yoke ends.
I thought it was in '73 that the LWB trucks started getting the one piece driveshaft, maybe it was sooner?
Barry
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7/14/2004, 6:16 pm
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willowbilly3
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Re: SWB trucks: 1-piece or 2-piece driveshafts?
I have never experienced either anomonly but the diagrams kieth showed seem to have one flaw and that is listing an F-250 shortbed which to the best of my knowledge could only be had on a crew cab which would have a 2 piece anyway. I can see some one making a one piece for a long bed and I know guys who have done it but the short bed with a carrier bearing I would need to see to believe. Of course I am the same guy who swore there was never a dana 60 in a half ton too until about a year ago.
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7/18/2004, 6:19 pm
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