Updating the rear spring pack
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Joined: Aug 2002
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From: Great NW
Updating the rear spring pack
What needs to be done to my '74 F100 (9" rear end) to upgrade the rear spring pack to, say, F350 standards?
It already has air shocks and an anti sway bar on the back...
TIA
GS
It already has air shocks and an anti sway bar on the back...
TIA
GS
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Updating the rear spring pack
Gene, incresing the spring stiffness will NOT increase your load capacity.
Check out some of the info on loading in this forum like:
https://www.ford-trucks.com/forums/s...threadid=93527
There are many others also.
Lucky dog, -I see you live in Seattle!
Check out some of the info on loading in this forum like:
https://www.ford-trucks.com/forums/s...threadid=93527
There are many others also.
Lucky dog, -I see you live in Seattle!
Last edited by Torque1st; Jan 24, 2003 at 03:49 AM.
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Joined: Aug 2002
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From: Minneapolis, MN
Updating the rear spring pack
Gene,
Think about it. Do you really want to put as much weight as a 1 ton can carry on those little axle shafts and single bearing? Axles can and do break.
Don't do it!
Just my $.02
Greg
Think about it. Do you really want to put as much weight as a 1 ton can carry on those little axle shafts and single bearing? Axles can and do break.
Don't do it!
Just my $.02
Greg
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Joined: Nov 2002
Posts: 211
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From: United States
Updating the rear spring pack
gene,
are your exsisting springs 3" wide or 2.5" wide?
if they are 3" you can put any 3/4 ton dana 60 or 70 rear axle from a 73-79 and some others all the way to 96 will fit under your truck along with the springs.
if they are the 2.5" varity I am not sure if the wider springs will fit the spring mounting brackets.
also the driveshaft will have to be shortend a couple inches because the dana axle reaches farther foward than the 9" ford.
are your exsisting springs 3" wide or 2.5" wide?
if they are 3" you can put any 3/4 ton dana 60 or 70 rear axle from a 73-79 and some others all the way to 96 will fit under your truck along with the springs.
if they are the 2.5" varity I am not sure if the wider springs will fit the spring mounting brackets.
also the driveshaft will have to be shortend a couple inches because the dana axle reaches farther foward than the 9" ford.
Last edited by stargazer; Jan 24, 2003 at 10:42 AM.
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Joined: Dec 2002
Posts: 1,346
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From: missouri
Updating the rear spring pack
Gene what are you planning on doing with this truck? just wanting to add some springs to haul loads a little better? or as a 1 ton?
The first to upgrade the spring pack you will need
1) torch (opt.)
2) new springs
3) new I bolts
4) new U bolts
5) floor jack and jack stands
6) nice level concrete floor
more to list but we need to know what you are planning to do with this truck.
If you intend to use it as a 1 ton you might as well junk it now.
the frame is week compared to a f-350 even if you put all the f-350 parts you will bend the frame. I did this to my trusty ol 68 f-100 now its getting a 4x4 f-250 frame (next project)
1/2 tons are intended for driving truck and light loads not exessive loads I have had two 1/2 ton trucks and over worked them both now I buy only 3/4 or 1 ton's
The first to upgrade the spring pack you will need
1) torch (opt.)
2) new springs
3) new I bolts
4) new U bolts
5) floor jack and jack stands
6) nice level concrete floor
more to list but we need to know what you are planning to do with this truck.
If you intend to use it as a 1 ton you might as well junk it now.
the frame is week compared to a f-350 even if you put all the f-350 parts you will bend the frame. I did this to my trusty ol 68 f-100 now its getting a 4x4 f-250 frame (next project)
1/2 tons are intended for driving truck and light loads not exessive loads I have had two 1/2 ton trucks and over worked them both now I buy only 3/4 or 1 ton's
Last edited by 460429_freak; Jan 24, 2003 at 02:42 PM.
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Thread Starter
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Posting Guru
Joined: Aug 2002
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From: Great NW
Updating the rear spring pack
I plan on doing some light towing and want to upgrade the rear end while I am at it...
If I am going to go through all of the trouble to rebuild the rear end, I may as well upgrade the whole package (springs and axles).
If I am going to go through all of the trouble to rebuild the rear end, I may as well upgrade the whole package (springs and axles).
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