S10/ Blazer Lift on Van?

S10/ Blazer Lift on Van?

Postby Wimpazz [OP] » November 4th 2016, 9:37pm

Hey everyone,

Ghost asked a question that I have no idea what the answer would be. I'm fairly sure its a big fat NO, but never hurts to ask..

What question? This one...

Is it feasible to use most or all of an 'off the shelf' S10 or Blazer lift on our vans?

Something like this one.. http://www.superlift.com/lift-kits-leve ... fgod5E0K2A

Thanks everyone!
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Re: S10/ Blazer Lift on Van?

Postby TurnNburn » November 4th 2016, 10:06pm

I know its been ruled out as a no. Its my understanding that the astro doesn't share enough of the same suspension components to make one of these kits work
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Re: S10/ Blazer Lift on Van?

Postby Wimpazz [OP] » November 4th 2016, 10:31pm

That's my impression as well, but I don't ever recall seeing addressed directly.
Without data, its just an opinion!

Thanks bro
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 4th 2016, 11:16pm

Wimpazz wrote:That's my impression as well, but I don't ever recall seeing addressed directly.
Without data, its just an opinion!

Thanks bro

Exactly!
There is very little as far as actual specs info available but just enough to justify looking more into it.

Maybe we should make this a community project to gather the info??
~Ghost
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Re: S10/ Blazer Lift on Van?

Postby AstroWill » November 4th 2016, 11:28pm

I'm of the opinion that if the parts would have worked, someone in the last 30 years would have noticed. ;)

Things are mounted differently, for example the rear part of the lift moves the leaf springs from being mounted below to being mounted on top, ours are already there.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 5th 2016, 2:24am

AstroWill wrote:I'm of the opinion that if the parts would have worked, someone in the last 30 years would have noticed. ;)

Things are mounted differently, for example the rear part of the lift moves the leaf springs from being mounted below to being mounted on top, ours are already there.

The rear is easily handled with the journeys or overland lifts.

The front lift for the IFS is what we are talking about here.
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Re: S10/ Blazer Lift on Van?

Postby AstroWill » November 5th 2016, 3:06am

I see, must have missed that.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 6th 2016, 7:05am

For reference. This is the style lift I am wondering if it can be adapted to work.
http://www.fourwheeler.com/how-to/suspe ... -lift-kit/
BDS 5" lift for S-10/Blazer http://bds-suspension.com/kit-customizer?kid=166H

Been doing some research on this.
I can directly cross the upper control arm bushings to the S-10/Blazer.
This means that the upper control arm relocation brackets could possibly work

BUSHING. Steering Knuckle Upper Control Arm.
Part Number: 15607586 ; 15993180; 15607587
Chevy Astro 90-05
Blazer 92-96

Upper Control ARM RH
Part Number: 15661508 ; 15596694
Chevy Blazer 84 - 05
Chevrolet S10 84 - 05

Upper Control ARM LH
Part Number: 15661507 ; 15596693
Chevy Blazer 84 - 05
Chevrolet S10 84 - 05

The lower control arm is where things get to be a problem.
What I have found is the S-10/Blazer uses a M14 bolt for the control arm bushings where the Astro uses a M16 bolt.

When cross referencing the lower control arm bushings. The Astro will cross with the 88-99 K1500 full size

Control Arm Bushing - Lower - Front Susp (NAPA)
Proformer Chassis PART # PCC 12533
Chevrolet Truck Astro Van 1990 - 2005
Chevrolet Truck K1500 1/2 Ton 4WD - Pickup 1988 - 1999

So it appears that the AWD front suspension is a combination of S-10/Blazer upper specs and full size lower specs.

The piece of info I am not finding is the length of the control arm bushings. This will determine if the Astro control arms will fit into the lower control arm relocation brackets. It might be as simple as drilling a larger hole for the mounting bolt.

Can anyone get a length measurement for the lower control arm bushings on both the Astro and S-10/Blazer?
EDIT: Found the bushing info on O'reillys

Blazer Lower Rear
Part No. MOOG-K3113
Length Bushing 1 (In): 2.400 Inch
Inside Diameter Bushing 1 (In): 0.580 Inch
Outside Diameter Bushing 1 (In): 2.050 Inch

Blazer Lower Front
Part No. MOOG-K5262
Length Bushing 1 (In): 2.410 Inch
Inside Diameter Bushing 1 (In): 0.590 Inch
Outside Diameter Bushing 1 (In): 1.920 Inch

Astro Lower
Part Number: MOOG-K6329
Bushing 1 Rear
Bushing 2 Front
Length Bushing 1 (In): 3.850 Inch
Length Bushing 2 (In): 2.950 Inch
Outside Diameter Bushing 1 (In): 2.610 Inch
Outside Diameter Bushing 2 (In): 2.200 Inch
Inside Diameter Bushing 1 (In): 0.640 Inch
Inside Diameter Bushing 2 (In): 0.640 Inch

So, No! The lower control arms will not fit in the lower control arm relocation brackets without modification or custom built control arms. Maybe the Blazer upper brackets with the K1500 lower brackets??
/edit

There will be other details that will need to be looked at also.
Torsion bar mount relocation.
Sway bar mount.
Steering
Brake Hoses.

C'mon Guys. I believe it can be done!
A True 5-6" lift for the AWD Astro!
Last edited by MI_Ghost on November 6th 2016, 9:31am, edited 1 time in total.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 6th 2016, 7:18am

And for reference for the rear lift.
Journeys Off Road rear spring hangers, and shackles for 3" lift.
S-10 leaf springs for an additional 3" lift.
For a total of 6" rear lift.
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Re: S10/ Blazer Lift on Van?

Postby Wimpazz [OP] » November 6th 2016, 7:42pm

Check you out, way to go Barry!
You got further on that no one else has I believe, well done sir.
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Re: S10/ Blazer Lift on Van?

Postby chaosR » November 6th 2016, 11:53pm

This is very interesting, just so happens I now own both, a 2000 Astro 4x4 and a 2000 Jimmy. I know the Jimmy's are basically a S 10 .
I just go the Jimmy last month for a second vehicle and to keep the mileage down on my Astro. And as soon as i got it I started wondering about Jimmy / S10 to Astro lifts, especially the problematic IFS front.
I've done a lot of work with my Astro IFS, longer shocks, as well as repositioning my upper a arm ball joint, and I also dropped my diff one inch years ago.

But I think dropping the a arms like this would be ideal. Even if the kit had to be modified slightly to work on the Astro.
Unfortunately I have a broken arm at the moment, but as soon as I heal up you can bet the measuring between the Astro and Jimmy will commence. I can post what I find here if someone has not beat me to it by then.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 7th 2016, 1:49pm

chaosR wrote:But I think dropping the a arms like this would be ideal. Even if the kit had to be modified slightly to work on the Astro.
Unfortunately I have a broken arm at the moment, but as soon as I heal up you can bet the measuring between the Astro and Jimmy will commence. I can post what I find here if someone has not beat me to it by then.

Please post any info you come up with

As I mentioned. I believe the upper brackets will work but the lower brackets will have to be modified for the longer bushing in the astro control arms.

Let me know when you get ready to start measuring. There are a few key measurements that I would like to get.
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Re: S10/ Blazer Lift on Van?

Postby Wimpazz [OP] » November 7th 2016, 3:53pm

Outstanding, thank you both for helping to broaden our horizons... I do love choices.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 7th 2016, 11:37pm

Wimpazz wrote:Outstanding, thank you both for helping to broaden our horizons... I do love choices.

Not sure how much broader it has become. As yet this is all still just theory.
Many, many more questions need to be answered.

The only thing proven is that it is worth looking at further than just saying the part numbers do not match.
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Re: S10/ Blazer Lift on Van?

Postby chaosR » November 8th 2016, 8:04am

Let me know when you get ready to start measuring. There are a few key measurements that I would like to get.[/quote]


Sounds like a plan.
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 9th 2016, 10:30am

ALERT!!
Be very careful what you are using for cross referencing information. :banghead: :text-blondmoment:
I was chasing back cross reference for the 88-99 K1500 bushings for verification and noticed that the lower bushings were also crossing back to the 92-96 blazer. This is not possible with the S-10/Blazer due to the different bolt sizes used.

Going through NAPA and Oreilly's I confirmed that they are indeed different. Which put the previous cross reference of the upper bushings in doubt. The upper control arm specs are not S-10/Blazer upper as previously mentioned. Rechecking the upper bushings for the Astro through NAPA and Oreilly's has them crossing to the K1500 as well. So both upper and lower control arm bushings are K1500 specs. In fact the complete upper control arm w/ball joint will cross to the K1500

We need to be looking at the 88-99 K1500 full size lift kit.
This should work with fewer needed modifications.
Some issues to take care of.
The K1500 uses a different differential. Upper and right side differential mounts will be needed.
Torsion bar and sway bar mounts easily made from C-channel or box tubing.
Width will need to be checked. Narrowing the lower cross members might be needed.

I think I need to find an AWD Cargo for more research. :shrug:
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 12th 2016, 6:58pm

MI_Ghost wrote:I think I need to find an AWD Cargo for more research. :shrug:

Well I did the next best thing and found some great pics of the AWD subframe thanks to akforceten in his conversion post. viewtopic.php?f=40&t=53586&start=60#p699426

Looking at these pics I can see some MAJOR problems with using this style of lift on the Astro.
I'll start off with that GIGANTIC wart on the side of the frame called a travel limiter. While doing the job of limiting the downward movement of the suspension. It also blocks the ability to lower the upper control arm mounting point.

The next big issue is the upper control arm mounting points themselves. These are not flush with the outside of the frame but set back on a ledge. This eliminates the the ability to use the upper relocation brackets to lower the mounting points. Any attempt to lower the mounting points without custom upper control arms will cause massive camber changes.

Either custom built upper control arms or major restructuring of the frame will be necessary to make this style of lift work on the AWD subframe.

Moving on to the differential and lower control arm relocation. Everything looks straight forward for the lower cross members and differential brackets with the previous mention width checking
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Re: S10/ Blazer Lift on Van?

Postby TurnNburn » November 12th 2016, 7:29pm

Thanks for taking the initiative and doing most of the leg work Ghost. Good to know once and for all its not possible to lift this way. At least without serious modifying.

With that being said I'm always blown away at peoples creativity and ingenuity on this site and would not be surprised if some one took on this project and made it work. If only prove us wrong.

Gauntlet thrown...
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Re: S10/ Blazer Lift on Van?

Postby MI_Ghost » November 12th 2016, 9:48pm

TurnNburn wrote:With that being said I'm always blown away at peoples creativity and ingenuity on this site and would not be surprised if some one took on this project and made it work. If only prove us wrong.

Gauntlet thrown...


At least in theory that is what I am trying to do. Hopefully somebody can take the ball and run with it to provide an option other than cranked up torsion bars and bad ball joints.

Still have plenty more research to do.
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Re: S10/ Blazer Lift on Van?

Postby Wimpazz [OP] » November 13th 2016, 4:07pm

Outstanding work everyone, thank you very much!

Now, I'm off to dial in our DIY 3+1 lift :rockon:
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