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Longer Rear springs

Did you notice anything different after the additional inch? Maybe I can do some sweet shackles like @Deuling did.

Yes I had a shackle angle that allowed more bump travel. Here’s a photo AFTER I moved it back an inch. This is with an empty bed btw

1F262294-6AED-4C45-AD0E-F69D7F73143C.jpeg
 
Does anyone know how much travel these springs have? Curious what length shocks I need, trying for a cheap way to get by before I do a custom set of springs or link it. Who knows maybe I will be happy with these and keep them. I'm wanting to set the bump numbers up the same as the front links if not more in the rear if the spacing is good.
 
Does anyone know how much travel these springs have? Curious what length shocks I need, trying for a cheap way to get by before I do a custom set of springs or link it. Who knows maybe I will be happy with these and keep them. I'm wanting to set the bump numbers up the same as the front links if not more in the rear if the spacing is good.

I’m not sure what the exact travel numbers are but I use every bit of a 14” inboarded without bumps or limit straps. IIRC Adam is using fox shocks off a ferd with bumps, I’d take a closer look at his setup.
 
I’m not sure what the exact travel numbers are but I use every bit of a 14” inboarded without bumps or limit straps. IIRC Adam is using fox shocks off a ferd with bumps, I’d take a closer look at his setup.
The fox shocks are 12 inches, sounds like these can pull more.

I think @jekquistk5 is running these springs, maybe Jesse has some idea.
 
Not to hijack. I love the way the rears in my 3/4 ton burb ride. I'm putting a set on the 1/2 ton when I install my shackle flip.
 
The fox shocks are 12 inches, sounds like these can pull more.

I think @jekquistk5 is running these springs, maybe Jesse has some idea.


Yup running the ford 57's as well. They pull 11.5" of travel with a longer shackle than stock. They have settled a bit on me, so I'll be going to like a 6" shackle and that should help. They flat out work awesome with my 12" ads.
 
Yup running the ford 57's as well. They pull 11.5" of travel with a longer shackle than stock. They have settled a bit on me, so I'll be going to like a 6" shackle and that should help. They flat out work awesome with my 12" ads.
Do you have it bumping at a flat spring? I was hoping to get close to 14 inches but it sounds like wishful thinking.
 
Do you have it bumping at a flat spring? I was hoping to get close to 14 inches but it sounds like wishful thinking.

Slightly negative. If you did a tension style shackle you could squeeze way more out of them. With it flipped there is only so much you can droop.
 
If you are going with the 56's or even 57's, consider something before you finish the project.

"Could I benefit from moving my axle back 4 inches?"

I did the the shackle flip, 56s and longer drive shaft years ago. Not until recently did I flip the springs around and gained 4" of wheelbase. That of course meant a new tubed driveshaft and some shock location work. Wish I had done it to begin with.
@skunked and @Babaganoosh would say no but they aren't running Blazer wheelbases.

food for thought
 
Yup running the ford 57's as well. They pull 11.5" of travel with a longer shackle than stock. They have settled a bit on me, so I'll be going to like a 6" shackle and that should help. They flat out work awesome with my 12" ads.
Yes, but how do I regain the lift I wonder how the lift springs work for travel numbers? I eventually want to go back to a tension style shackle.
 
If you are going with the 56's or even 57's, consider something before you finish the project.

"Could I benefit from moving my axle back 4 inches?"

I did the the shackle flip, 56s and longer drive shaft years ago. Not until recently did I flip the springs around and gained 4" of wheelbase. That of course meant a new tubed driveshaft and some shock location work. Wish I had done it to begin with.
@skunked and @Babaganoosh would say no but they aren't running Blazer wheelbases.

food for thought

I kept my rear axle as far back as I could for departure angle however with the short bed and a K5 tank behind the axle I'm limited. 120" wheelbase btw.
 
The center pin is not in the same place on 57"s vs 56"s. So also take that into thought. The bolt is 1" forward of the stock 56" location. So if you switch it around it'll be 5" back instead of 4.
 
The center pin is not in the same place on 57"s vs 56"s. So also take that into thought. The bolt is 1" forward of the stock 56" location. So if you switch it around it'll be 5" back instead of 4.
So what's ideal for axle location? Having it 5" back? Probably going to run 57's and trying to get an idea if having to move the axle forward or back at all is going to be necessary.
 
No idea myself lol. Just making note of the pin location difference.
 
For what it's worth, I used 64s on a k5 frame. Left the front spring mount in the factory location. Kept the K5 gas tank and skid plate in the factory location. The axle did not hit the tank but it was very close. This is with a DIY4X Razorback diff cover and their Wraptor axle truss btw
 
Whats the end goal with the rig? Trail wheeling, go fast? I loved my truggy at 117" wheel base. I thought it was about perfect. I ran 64" chevy springs.
 
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