Stupid Question - 52's and 56's

[reddog64]

78 K5 dana 60 / dana 70
aiming for about 6-7 inches to clear fore dees'


I have some unknown front springs that look to be about 3-4 inches, and just picked up a set of custom (stock length) 4" rear springs...

Now i was gonna go buy new front springs...
But why settle for the usual...

So...
If i use these "stock" 4" lift spring from the rear ( are these a 52"? ) (the ones i just got used) in the front I can buy some 56's for the back correct?

I'm gonna do a shackle in the back with a smaller lift spring and zero rate...

???'s

1 -How much should i expect lift wise from this 4" rear lift spring in the front... (with zero rate)
2 - what would i order from (year model etc...) to get a 56" for the rear that will work with a shackle flip to net 6 inches total (plus zero rate)
3 - a shackle flip with stock shackle size gives 2 inches???

 

[boz42]

There is no way for us to know which aftermarket "custom" spring you have. You need to measure the spring you have from eye to eye & see if they are 52" or 56". Measure with the arch not straight across.


If you are working on a k5 it should have 52" rears & 48" fronts stock.

1 -How much should i expect lift wise from this 4" rear lift spring in the front... (with zero rate)
2 - what would i order from (year model etc...) to get a 56" for the rear that will work with a shackle flip to net 6 inches total (plus zero rate)
3 - a shackle flip with stock shackle size gives 2 inches???

1. 52's up front net you 4"s so a 4" lifted one would get you about 8" + a 1" zero rate equals 9" total

2. Depends on which shackle flip you have or are going to buy. Any company worth their salt should be able to sell you a 56" spring. They came under every 3/4 & 1-ton truck & a lot of long bed half tons between 73-87.

3. Once again depends on which shackle flip you run. ORD makes 4" & 2.5" I think Kert's is 4-5".



By the way what in the hell is a fore dees'?

 

[reddog64]

40's

So i dont need the 52 inch 4" lift springs for the rear... cause i dont want 8 inches of lift...

Sounds like i need a 2 inch 52 for the front...
But i could take my stock rear spring, and use it up front... for 4 inches...
---

what about the 56's in the rea.. do they do the same thing? more lift out of the box?

 

[boz42]

A little searching will tell you all you ever wanted to know about the 52-56" topic. They net the same amount of lift.

Why type out fore dees when you could type 40?? I don't get it.

 

[reddog64]

i thought it was funny...

I have been searching
And no where did i see anyone posted "They net the same amount of lift" untill now.

Nor did i find out how far about i need to move my rear shackle back...

edit -

And try doing a search for 52" and 56" - it's too short...

 

[boz42]

And try doing a search for 52" and 56" - it's too short...

I think I would try searching " 52" spring swap " if just the numbers are too short.

 

[reddog64]

i searched for "inch springs" and found some good stuff...
It's the -52"- that isnt searchable...


I'm more or less trying to see, if when i put on either a 2.5 or 4 inch shackle flip (now thanks to you it looks like a 2.5 cause a 56" give my 4 inches) how far i need to move it back and if i need to do anything to the front hanger...

 

[boz42]

56's don't give you any lift in the rear. Only in the front.


On the rear it still depends on which shackle flip you have, & how long of a shackle you want to run. It is trail & error. Just buy the flip & the springs & move the flip till you get the shackle angle right.

 

[reddog64]

Thanks,

So longer springs do nothign but flex better for the rear,
Longer springs up front provide lift and flex!

Thanks Boz

 

[boz42]

I think we are on the same page now.