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Projects & Parts => Garage/Tech => Topic started by: SHORTRAC on July 27, 2008, 03:09:34 PM

Title: strait axle instead of twin i beam
Post by: SHORTRAC on July 27, 2008, 03:09:34 PM
i got a 97 f-250 with the good ole twin under it what does it involve stuffin a straight axle under it. thanks 4 anyones knowledge. ;D
Title: Re: strait axle instead of twin i beam
Post by: Bo Duke on July 27, 2008, 03:13:17 PM
stripping out all the old running gear, then finding a set of leaf springs that will give u the right ride height......, mounting ur spring perches, bolt up the axle and do ur stearing....., I plan on doing it to my 93 ford
Title: Re: strait axle instead of twin i beam
Post by: N8 on July 28, 2008, 01:58:27 AM
Not sure on this , but I was told the frames on the F-150's and 250's were not made to be leaf sprung, something about a "crumple zone?" ???  and that a coil spring set up had to be used ==dunno
Title: Re: strait axle instead of twin i beam
Post by: Eroq on July 28, 2008, 03:40:05 AM
leaf sprung TTB?
Title: Re: strait axle instead of twin i beam
Post by: Bo Duke on July 28, 2008, 03:40:50 AM
Quote from: N8 on July 28, 2008, 01:58:27 AM
Not sure on this , but I was told the frames on the F-150's and 250's were not made to be leaf sprung, something about a "crumple zone?" ???  and that a coil spring set up had to be used ==dunno
thats probably right, cuz the first 8" or so of the frame is made to crumple up......
Title: Re: strait axle instead of twin i beam
Post by: Eroq on July 28, 2008, 04:19:12 AM
my 94 f250 is leaf sprung TTB... would be easy to do SFA
Title: Re: strait axle instead of twin i beam
Post by: Bo Duke on July 28, 2008, 05:59:45 AM
Quote from: Eroq on July 28, 2008, 04:19:12 AM
my 94 f250 is leaf sprung TTB... would be easy to do SFA

TTB?
Title: Re: strait axle instead of twin i beam
Post by: Mudbuster on July 28, 2008, 10:48:18 AM
Quote from: mac_henderson2001 on July 28, 2008, 05:59:45 AM
Quote from: Eroq on July 28, 2008, 04:19:12 AM
my 94 f250 is leaf sprung TTB... would be easy to do SFA

TTB?

yes ford made leaf sprung TTB's my buddy had one for a while it was before the superduty's when they brought back the strait axle.
Title: Re: strait axle instead of twin i beam
Post by: N8 on July 28, 2008, 10:51:08 AM
TTB=Twin Traction Beam

Just the F-150's are coil front, I mispoke myself.

Cage Offroad makes a bolt in SAS kit for coil font ends, but it's expensive, about $2000
Title: Re: strait axle instead of twin i beam
Post by: Kodiak450r on July 29, 2008, 11:18:45 PM
easy simple and if your shop around cheap. older broncos were coil sprung and had solid axles. not sure on years cuz i'm not a ford guy but all you have to do is take the axle out of an early bronco and put it right into your truck. as far as i'm aware it's pretty much a direct bolt in. as for the ones who have I beam truckw tih leaf springs yes you can do the same only with a leaf spring straight axle. a friend of mine has a 87 F250 that had twin I beam but now has a soild axle in it and didn't have to do much other then get a new axle, cut the i beam mounts out and bolt everything in with some lift springs
Title: Re: strait axle instead of twin i beam
Post by: Kodiak450r on July 29, 2008, 11:22:30 PM
good article in here http://images.google.com/imgres?imgurl=http://nwuonline.com/sas12.jpg&imgrefurl=http://nwuonline.com/Tech.html&h=600&w=800&sz=132&hl=en&start=60&tbnid=tqlYSWSHnAIXZM:&tbnh=107&tbnw=143&prev=/images%3Fq%3D67%2Bford%2Bbronco%2Bfront%2Baxle%26start%3D40%26gbv%3D2%26ndsp%3D20%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26sa%3DN
Title: Re: strait axle instead of twin i beam
Post by: Disturbed Sledneck on July 30, 2008, 12:15:55 AM
Quote from: SHORTRAC on July 27, 2008, 03:09:34 PM
i got a 97 f-250 with the good ole twin under it what does it involve stuffin a straight axle under it. thanks 4 anyones knowledge. ;D
Its a bolt in swap using factory parts.  I've done 4 of em.   ==np

Find a F350 Dana 60 front from a '87 to '97, any will work.   **Make sure you get the factory track-bar and track bar bracket with the axle.**  You can even use your factory leafs, though they are a little lower than F350's,(about 2 inches).  You can bolt up the track bar bracket using factory holes in the crossmember under the motor where the TTB center pivot brackets bolted up.  You are definately going to want that track bar, scary bump steer without it.  Use the F350 steering setup, tie-rod, drag-link, and pitman arm.
There was a F350 Dana 60 front in the Shop & Swap for a good price from a '97 I believe. 
I'm going to be doing another one in the next week or 2, its a '94 F250.
Title: Re: strait axle instead of twin i beam
Post by: Captn. J on July 30, 2008, 12:40:52 AM
Quote from: Disturbed Sledneck on July 30, 2008, 12:15:55 AM
Quote from: SHORTRAC on July 27, 2008, 03:09:34 PM
i got a 97 f-250 with the good ole twin under it what does it involve stuffin a straight axle under it. thanks 4 anyones knowledge. ;D
Its a bolt in swap using factory parts.  I've done 4 of em.   ==np

Find a F350 Dana 60 front from a '87 to '97, any will work.   **Make sure you get the factory track-bar and track bar bracket with the axle.**  You can even use your factory leafs, though they are a little lower than F350's,(about 2 inches).  You can bolt up the track bar bracket using factory holes in the crossmember under the motor where the TTB center pivot brackets bolted up.  You are definately going to want that track bar, scary bump steer without it.  Use the F350 steering setup, tie-rod, drag-link, and pitman arm.
There was a F350 Dana 60 front in the Shop & Swap for a good price from a '97 I believe. 
I'm going to be doing another one in the next week or 2, its a '94 F250.
yup u re correct  mine re this way i have lifed  leaf spring up front from a donor  and i put a dana 60 up front   no problem , easy.... just like others