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-   -   Spiral of OCD - 2000 Jimmy 4 dr ZR2 swap (https://blazerforum.com/forum/builds-48/spiral-ocd-2000-jimmy-4-dr-zr2-swap-106885/)

kernel Oct 27, 2024 10:47 PM

Spiral of OCD - 2000 Jimmy 4 dr ZR2 swap
 
Truck started life as a 2000 Jimmy SLS. Owned it for over 7 years and have been picking off projects one by one. Stock pic of what it looked like when bought.

https://cimg3.ibsrv.net/gimg/blazerf...dfe220affd.jpg

Over the years, have rebuilt the engine, added ZR2 flares, removed body cladding, fixed rusty rockers and repainted, lifted (body 1.5 and RC 2.5), multiple sets of wheels and tires and on and on.

Couple years ago with ZQ8 S10 wheels.
https://cimg7.ibsrv.net/gimg/blazerf...70c50b56b4.jpg

Right now with Irocs and 265/70/16's

https://cimg6.ibsrv.net/gimg/blazerf...3ecde09c84.jpg

Have a couple oil leaks and hate laying cardboard under the truck every day so decided to pull the engine to fix the leaks. One day while walking the local wrecking yard, I noticed a ZR2 so I decided to pull the rear axle to get the extra width and 3.73's (had stock 3.42's). While doing that, another guy was pulling the fenders and mentioned that he had swapped his four door to a ZR2 front frame (he also pulled the front diff for me in about 10 minutes, thanks buddy!). That got me thinking... if the engine has to come out, it's really not much more work to pull the body off and do the frame swap ... so after a couple weeks of going back and forth, I decided to go for it. The funny thing is that it is actually quite a bit of work to remove the body but I was just trying to talk myself into it. Of course the truck is old and things need to be replaced anyways so might as well go for it. One thing leads to another and on and on...

So here's the front half of the frame from a 2005 Blazer ZR2 along with the torsion bars, lower control arms and steering center link (these parts are specific to the ZR2). The only thing missing was the trans crossmember which I'm trying to find. Or I'll make one...
https://cimg2.ibsrv.net/gimg/blazerf...b8b52afcab.jpg
https://cimg4.ibsrv.net/gimg/blazerf...c6aa546e28.jpg
https://cimg6.ibsrv.net/gimg/blazerf...7895b7a8e5.jpg

The frame had a lot of surface rust so I got a quote from a sandblasting place that was actually very reasonable. The lower control arm mounts are known to crack on these but this one had no issues. Planning on building a brace anyways.
https://cimg0.ibsrv.net/gimg/blazerf...af036d11c3.jpg
Got it back and under cover about 15 min before the rain started. Painted with rust paint followed by a coat of Raptor Liner. I used Raptor to coat my fender flares and it is very easy to use and you can get a variety of finish types depending on PSI and using reducers. I wanted a fine texture much like the stock GM plastic look.

Painted with something called Armor Coat rust paint. Was fairly thick so I reduced it a little with mineral spirits and sprayed with a HVLP gun. Worked OK as the paint was still pretty thick.
https://cimg0.ibsrv.net/gimg/blazerf...8c0e7bd01b.jpg

Sprayed with Raptor reduced 10% and sprayed at 60PSI.
https://cimg1.ibsrv.net/gimg/blazerf...3f0e14c015.jpg
https://cimg5.ibsrv.net/gimg/blazerf...82a953400e.jpg
https://cimg6.ibsrv.net/gimg/blazerf...75d30755f1.jpg

Also had the lower control arms sandblasted with the frame. I have a fridge sized powder coat oven so coated them in Black Jack from Prismatic Powders. Wanted something fairly flat so it can easily be touched up with a rattle can if needed.
https://cimg8.ibsrv.net/gimg/blazerf...c2b4e767a3.jpg
https://cimg2.ibsrv.net/gimg/blazerf...e365aa587e.jpg

Also stripped and coated the torsion bar crossmember
https://cimg2.ibsrv.net/gimg/blazerf...2494df40a7.jpg

kernel Oct 27, 2024 11:09 PM

With the front frame done for now, it was time to start pulling everything to split the frame and body.

https://cimg7.ibsrv.net/gimg/blazerf...07da1c5692.jpg
https://cimg2.ibsrv.net/gimg/blazerf...454d8c0540.jpg
https://cimg5.ibsrv.net/gimg/blazerf...d469145a85.jpg

If you have ever pulled one of these engines, you will know how much fun it is. It wasn't long before I decided to not pull the engine first but take it out with the frame.
https://cimg8.ibsrv.net/gimg/blazerf...c195b37e59.jpg
https://cimg6.ibsrv.net/gimg/blazerf...8779ca16ee.jpg
https://cimg2.ibsrv.net/gimg/blazerf...d26a25b3b2.jpg

Started splitting the body and frame. Definitely a little sketchy but had to use what was available. Had to pull off the wheels to get the frame low enough to clear the body.
https://cimg7.ibsrv.net/gimg/blazerf...c493d873bf.jpg

After fighting with it for a while, finally out!
https://cimg9.ibsrv.net/gimg/blazerf...77fd6b57fa.jpg
https://cimg0.ibsrv.net/gimg/blazerf...290c9ff539.jpg
https://cimg1.ibsrv.net/gimg/blazerf...f223a09f89.jpg
https://cimg2.ibsrv.net/gimg/blazerf...5430f9672f.jpg
https://cimg3.ibsrv.net/gimg/blazerf...0189876f23.jpg


kernel Oct 27, 2024 11:23 PM

Spent a small fortune (considering this is a 2000 Jimmy which is basically worthless no matter the shape) at Rockauto. New CV axles, tie rods, ball joints, steering, bushings, hoses and on and on. Most of the body mount bushings are shot so will have the spend another fortune buying those from LMC.
https://cimg0.ibsrv.net/gimg/blazerf...7244958c99.jpg
https://cimg1.ibsrv.net/gimg/blazerf...7052e6f34d.jpg

Sandblasted and powder coated inner fenders.
https://cimg2.ibsrv.net/gimg/blazerf...dd41fb8a2e.jpg

Had add-a-leafs from when the truck was first lifted. Stripped down the leafs and rebuilt with new bushings and hardware.
https://cimg3.ibsrv.net/gimg/blazerf...7d19c3f94a.jpg
https://cimg4.ibsrv.net/gimg/blazerf...b8adc97eff.jpg
https://cimg5.ibsrv.net/gimg/blazerf...6d52f3ef85.jpg

kernel Nov 3, 2024 12:50 AM

Point of no return. Cut the existing frame before the factory splice.
https://cimg5.ibsrv.net/gimg/blazerf...d8f893579d.jpg

Took the back half to get sandblasted as well. Rust was worse on this half particularly around the body mounts.
https://cimg0.ibsrv.net/gimg/blazerf...272742d38f.jpg

Painted with Armorcoat
https://cimg1.ibsrv.net/gimg/blazerf...d4abc3160a.jpg

A couple of the body mounts were shot from rust so made some patch pieces.
https://cimg3.ibsrv.net/gimg/blazerf...86aa1ed9bd.jpg

Raptor liner again
https://cimg9.ibsrv.net/gimg/blazerf...6d10e9355c.jpg

Factory weld that needs to be cut
https://cimg5.ibsrv.net/gimg/blazerf...6374a4460f.jpg

https://cimg6.ibsrv.net/gimg/blazerf...e7bb03ebb2.jpg

https://cimg1.ibsrv.net/gimg/blazerf...db05bcd741.jpg

https://cimg8.ibsrv.net/gimg/blazerf...a25db05011.jpg

https://cimg0.ibsrv.net/gimg/blazerf...7c97719e45.jpg

https://cimg0.ibsrv.net/gimg/blazerf...562b7064ed.jpg

https://cimg3.ibsrv.net/gimg/blazerf...f2b816a439.jpg

All finished. Was not sure how the welding would go as I am very inexperienced but everything seemed to work well. We took measurements between the body mounts on each side of the cut. Also measured a few times for level.
https://cimg3.ibsrv.net/gimg/blazerf...f81ab6fde6.jpg

christine_208 Nov 3, 2024 02:01 AM

Dude! This is so awesome!!! :icon_imnotworthy:

You are creating a genuine 4dr ZR2! This is the dream of many of us!

Did you or are you going to install ZR2 axles too?

kernel Nov 3, 2024 10:14 PM

Rear end is from the wrecking yard Blazer that the frame came from. 8.5 inch with 3.73 gears. Front diff is also from the same vehicle but is the same as regular trucks just with the 3.73 to match. Still looking for an iron front but they are hard to find. CV axles were bought new from Rockauto as they are specific to ZR2's by being an inch or so longer.

christine_208 Nov 4, 2024 12:15 AM


Originally Posted by kernel (Post 754902)
Rear end is from the wrecking yard Blazer that the frame came from. 8.5 inch with 3.73 gears. Front diff is also from the same vehicle but is the same as regular trucks just with the 3.73 to match. Still looking for an iron front but they are hard to find. CV axles were bought new from Rockauto as they are specific to ZR2's by being an inch or so longer.

For all the effort you are doing, I figured you were on top of this.

Have you seen that Outfitter Design has heavy duty ZR2 front axles? They are not cheap! https://www.outfitterdesign.com/s10-...ferential.html

El_Beautor Nov 4, 2024 09:22 AM

Nice work! I'm really curious to see the rest of your build.

kernel Nov 4, 2024 01:55 PM


Originally Posted by christine_208 (Post 754903)
For all the effort you are doing, I figured you were on top of this.

Have you seen that Outfitter Design has heavy duty ZR2 front axles? They are not cheap! https://www.outfitterdesign.com/s10-...ferential.html

That price is nuts considering the whole truck cost $1,500 when I bought it.

kernel Nov 11, 2024 01:17 AM

Lower control arms with new balljoints and bushings. Bought a press pull kit from Amazon to install the bushings properly. The lower control arms are specific to the ZR2 but the balljoints and bushings are the same for all.
https://cimg7.ibsrv.net/gimg/blazerf...a35c5bcf49.jpg
https://cimg6.ibsrv.net/gimg/blazerf...8c78161c52.jpg

New torsion bar crossmember mounts.

https://cimg5.ibsrv.net/gimg/blazerf...0005fe4e53.jpg

https://cimg4.ibsrv.net/gimg/blazerf...5624ba7399.jpg

https://cimg0.ibsrv.net/gimg/blazerf...25cb108ed7.jpg

https://cimg3.ibsrv.net/gimg/blazerf...6c5923790c.jpg

These are the markings on the ends of the torsion bars. I believe that I read somewhere that the ZR2 torsion bars are heavier duty than regular S-series but don't quote me on that. These are the ones that came with the front frame.
https://cimg8.ibsrv.net/gimg/blazerf...042598f8ae.jpg
https://cimg9.ibsrv.net/gimg/blazerf...1b0a63709a.jpg

Torsion bars installed. Pretty easy process when everything is loose. I tightened up the adjusting bolts slightly but won't be able to figure it out until the motor is back in. The keys are the Rough Country keys for the 2.5 lift.
https://cimg8.ibsrv.net/gimg/blazerf...24fbd6f068.jpg

Cleaned up the diff bracket and installed new bushings.
https://cimg6.ibsrv.net/gimg/blazerf...ab95daa4d5.jpg

Front diff in. This is the front diff that was in the donor vehicle with 3.73 gears. I already had the RC 2.5 lift from years back and here you can see the angled diff block and the upper control arms. I'd like to put new upper ball joints in as well but need to determine if these control arms are the old style that use the Silverado ball joints or the new style that only use Rough Country ball joints. Anyone have any clues on this?
https://cimg4.ibsrv.net/gimg/blazerf...3dc5f4fa7f.jpg

https://cimg5.ibsrv.net/gimg/blazerf...f4eab556b6.jpg

https://cimg9.ibsrv.net/gimg/blazerf...f4474b5de9.jpg


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