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Rear shock mounts?

rear springs are 50.5" and the fronts are 43.5"
(grease zerk to grease zerk)

Also, the rear shackle is 4.5" from bolt center to bolt center
 
The front is even worse. :doah:

Alright, taking these springs off, looks like 52's front and 56's rear is the way to go. Any input?
 
If you add weight in the back you'll see more uptravel. If you don't plan on wheeling with a top or any other gear then softer springs will compress more. But adding longer springs often opens up a can of worms related to steering stability and driveshaft slip length. Be careful. ;)
 
No need for bump stops. Just use T.C. springs :haha:

So my other option is to use the same length springs, just find some with a softer rate? It sure would ride better.
 
No need for bump stops. Just use T.C. springs :haha:

So my other option is to use the same length springs, just find some with a softer rate? It sure would ride better.

You can get custom springs of the same size. Check out Alcan. Also remember its a 40 year old truck and not a bmw. Its going to be a bit rough no matter what springs you have. I was just trying to say that you should get all the gear you would normally have when you actually need that much flex. Once you add a passenger, spare tire, camping gear, tools, and spare parts, or a roll cage, the back end will sit differently. So make sure to plan out what you do before you go making changes.
 
Simple solution for more rear flex is to use a late model blazer spring...

It's the same length as the 1st gen but with a lot softer. I used a set off an '89 and with the shackleflip it flexed really well
 
Thanks Brian, I hear ya about the extra weight, but the front has even less compression. Barely 2" in front. I didn't think these springs would be so stiff.

So other than adding a panhard bar to the front, driveshafts need extra spline length due to the extra articulation (I'm guessing), relocate spring hangers in the front.....anything else :confused:
 
Simple solution for more rear flex is to use a late model blazer spring...

It's the same length as the 1st gen but with a lot softer. I used a set off an '89 and with the shackleflip it flexed really well
Cool, sounds good. Fronts as well?

Edit: Congrats on the little one! :) (My first born just turned 19, unbelievable)
 
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Soo much to read on this site, and not enough time in the day :1zhelp:

Bumpstops are on hold, there are plenty more items on the "to do" list. It appears that I don't need bumpstops anyway... lol

I guess we can call the "rear shock mounts?" good for now :D

Keep the input coming regarding the springs :bow:
(So much too learn, young grasshoppaa )
 
Keep in mind that a longer shackle will move your axle forward as it rotates around the radius of the spring. I'm assuming you've already experienced that with the shackle flip and pushed it back with the zero rate.

AJ, if I go with the longer shackle in the rear, at full compression would the axle be farther forward? I could use a little (see pics)
Edit: Not sure how it could, the front mount is fixed.

Plus, I might not be running these 38's just could help trying some on ;)

jan 2010 134 (Large).jpg

jan 2010 133 (Large).jpg
 
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I'm running the next generation of front springs (47"). Big improvement over the shorter original setup. I just used a longer shackle in the rear of the front. Flexes well, but I had to trim out some fender behind the tire.

Do you really need that much flex? Your blazer looks like you spent some time/money to make it so pretty :whistle:.
 
I'm running the next generation of front springs (47"). Big improvement over the shorter original setup. I just used a longer shackle in the rear of the front. Flexes well, but I had to trim out some fender behind the tire.

Do you really need that much flex? Your blazer looks like you spent some time/money to make it so pretty :whistle:.
What are the 47" springs out of (2nd Gen blazer I assume)? I think my fender will be good, plenty of clearance after the zero rates pushed the axle forward 1.5"

Do I need that much flex? Thing is, this has been my truck for a while, would like to keep camping and trail running in it. I've been changing things and accumulating parts...etc. So, my brother in law starts his own body shop a few years ago..blazer goes in for some rust repair, and years later comes out like it is :woot: Yeah, I'm apprehensive to scratch or dent it, but I've got to use it.

So, I thought the rear shocks would be fairly easy and the end to my suspension build. Realizing now, if I can get a little more flex and a little smoother ride by something fairly easy and not too costly... "Might as Well.." :D
 
What are the 47" springs out of (2nd Gen blazer I assume)? I think my fender will be good, plenty of clearance after the zero rates pushed the axle forward 1.5"

The stock front spring length for 73-87 trucks and 73-91 blazers is 47". You will need a lift kit spring (flat stockers won't work).

If the maximum flex is what you want, go for the 52/56 swap or maybe 56's all the way around. Longer springs will undoubtedly travel better.

Here is what you really need http://offroaddesign.com/catalog/FrontCoiloverConversion.htm :D
 
Hvy,

Looks like you are learning fast... Late model front springs are longer than the 1st Gen stockers so they aren't a direct bolt in like the rears.

It easy to find solutions that flex like crazy...and some will actually flex TOO much for street driving so be careful not to simply buy the softest springs you can find. I would estimate that a spring in the 300 -400 lb/in range up front would be a good compromise between flex and street manners.

:usaflag:
 
I didn't know all of this back then, but I had a set on by accident (I think they were the 47's, not 100% sure) I didn't like this shackle angle so I sent them back.

Is this angle acceptable? Or am I going coil over...lol (j/k)

0410091223a.jpg

0410091223b.jpg
 
considering that's only chassis and engine weight, it looks wrong. Once the body is on there, that shackle is going to be quite close to the frame.
 
considering that's only chassis and engine weight, it looks wrong. Once the body is on there, that shackle is going to be quite close to the frame.
With the body weight, the leaf would hit the frame (I would think).
So, does a 47" spring mount on stock hangers?
 
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