Rear Early Bronco Leaf Springs on Highboy? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 04-09-2012, 10:58 PM   #1 (permalink)
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Rear Early Bronco Leaf Springs on Highboy?

Anyone know if early bronco rear leaf springs will fit on a highboy? They are both 2 1/4" wide aren't they? I was reading earlier eye to eye for a highboy spring is 48". Then tried to find a value for an EB spring, saw numbers from 44-48" but no officila value.

Have been thinking about deleting the rear block on my truck and running all spring.

Thinking about going to 3" wide FS bronco deaver springs and a shackle flip.

Or if EB springs will work maybe some EB deavers and a smaller block.


Anyways, I'm no where near my truck so I can't go out and measure. There is an EB sitting right next to my truck.
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Old 04-10-2012, 03:16 PM   #2 (permalink)
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The springs on my Bronco are 2 1/4 by 48".

Are the highboy springs that short? My '69 F250 2wd uses a 56" spring.
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Old 04-10-2012, 04:02 PM   #3 (permalink)
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if you want to run all leaf and delete the block do a shackle flip, bronco leafs are not rated for the weight of a highboy and will sag more then stock springs and will not provide any lift
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Old 04-10-2012, 06:40 PM   #4 (permalink)
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x2 on the shackle flip. and rear highboy springs are 52" eye to eye
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Old 04-11-2012, 11:32 PM   #5 (permalink)
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The reason 48" rung a bell is because I saw it on this ol boys post here...

http://www.ford-trucks.com/forums/99...mpilation.html

Guess he has some miss information? I'll need to measure my own springs to see if they are close.

I'm out on the shackle flip right now. I want maximum departure angle.

Yes they are softer so they might sag. Don't care. I'm lookin to go softer to get more flex from the rear. Might have to run a 6" spring and block it to level it up, just part of the deal.

FS bronc's are heavier than EB's but their rear lift springs are the same part number as for the f150s. Weight on the spring without payload will be the same as my highboy.
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Old 04-12-2012, 09:01 AM   #6 (permalink)
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I believe my 66 F-100's are 48" in the rear, thats 2.5" wide.
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Old 05-26-2013, 01:45 AM   #7 (permalink)
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Quote:
Originally Posted by jeeper26 View Post
if you want to run all leaf and delete the block do a shackle flip, bronco leafs are not rated for the weight of a highboy and will sag more then stock springs and will not provide any lift
IDK about that. The spring wont be holding anymore weight than any F series truck of those years so technically a F100 spring will hold the weight of the bed without sagging.

http://littlekeylime.com/MrN/mrnimages/leaf_springs.png

According to that chart the EB spring is pretty close to F100 and F150 springs in load capacity.


I'm still interested in the EB lift springs mainly bc:

1.They are cheap as hell
2. Superflex springs on a bronco flex well, id think theyd flex even better on a larger truck
3. As short as they are they'd provide great deparchure angle even if I shackle flipped them
4. Combined with a lift spring and flip I can eliminate my block



Rear lift springs for a FS bronco are fucking stupid expensive. JBG wants like 550$ a pair, fuck that This ain't happenin.
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Old 05-26-2013, 10:36 AM   #8 (permalink)
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Full size bronco leafs are not the same as f-150.
The Fsb pack is a full pack and the f-150 has a 1/2 pack with overload.

That said I run them on a '97 f-250 and they flex really good. You'll need a tracbar to keep wrap under control though.


As for the eb stuff I don't have a clue
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Old 05-28-2013, 03:39 AM   #9 (permalink)
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Good to know. Hell I think what I'm going to do it get a custom spring pack made and add something for the axle wrap. After the cost and time of trying to swap shit around I think a custom pack is my my most cost effective option.
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