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ktmoutfront
02-08-2008, 03:04 PM
He asked me to post a thread about my truck. The one that has been sitting since getting back from Moab. I NEED DESERT. Have to find some place to open it up.

I was told to post up what I did.

Bought a blown motor, as in rod hanging out of the block, 87 GMC Jimmy. Wanted a rock and sand truck at first. Was just going to do a lift and tires with a new motor. Installed a crate GM long block from Chevy $1300 my cost. Smogged the truck, So Ca. rules required it. Registered it in my name, then it sat.

Crashed on my motorcycle racing in the So Ca. desert. Dislocated shoulder and broken collar bone later, I decided with age you get a cage. Thats when it started. I told the wife, "get out the check book, I am calling in favors and building a prerunner.

I began working with Rescue 3 in the desert as support for the motorcycle races. What was lacking was a truck to get to the injured riders in a hurry. Some times it was hours. So I went to work

Currie Enterprises was my first contact. Ray set me up with a nice 9+ rear end with 456, Detroit, 35 spine, late model Chevy flange rear end. So I bought backing plates and calipers to fit.

Next I needed shocks. Sway-A-Way was the next call. What a great bunch of guys. Fox and King would not talk to me. Told Sway-A-Way's owner about the project, he was on board. On the way to me were 4 2.5 inch coil overs, 4 3 inch triple by-pass shocks and 4 2 inch by 4 inch bump stops. It was like Christmas when they arrived. All clean and shinny, just waiting to be abused.

Called Allied wheels. Just wanted steal bead locks. They can not sell retail and I was not a race program. Started searching the internet and found a dealer who would work with me.

I already owned a JD2 manual bender and Bendtech software. Upgraded the Bendtech to Bendtech Pro. Cool and easy to use.

Gutted the truck, puller the windshield and began welding the floor up. The 2 300lb guys who used to ride in it were falling through the floor. No rust, just tearing through it.

Decided new seats were needed. Called PRP and they sold me a set of 4 blems, only I know why they are blems, and 5 point harnesses.

The check book is burning by now. Did I mention I had been saving for 10 years for this build?

Fabrication started on getting the axles under the truck. Enlisted the help of a friend who has built many Baja cars and trucks. Did a 3 link system in the rear and 2 radius arms in the front with a panhard bar. I did not like the way the front end moved side to side as you went through the travel. But you are limited, I thought. This set up ended up failing on me in the middle of nowhere. Strapped the front end in and backed it out 10 miles to get to a trailer. Now it is 3 linked in the front with a HOWE full hydro steering system.

Next was supporting the shocks. Built a 2 inch, .120 wall DOM 3 hoop cage. Bent this stuff with brute strength in 120 degree weather. The bender and software made for zero loss of material. Tied everything together with 1.5 inch, .120 wall DOM. Built new seat mounts tied to this cage. The hoops are plated at the floor and continue to the frame where they are gusseted and welded.

Everything was done in my garage on jack stands.

BFG finally came through with a sponsorship of 5 35 inch Baja T/A's at 1/2 price.

Bought a Lawrance GPS off of the internet and a race radio from the guys who supplied Rescue 3. 6 months of nights and weekends while working 60-70 hours a week was worth it. There is nothing like doing 60+ across the desert or down a SCORE road. When an MDR racer complains that somebody was cutting the course, and it is you. That is the ultimate compliment. They thought I was racing.

The truck looks stock with a lift and 35's. When someone looks under, the comments start. I was totally blown away when I received the Jason Paul Payne award for the "most innovative vehicle" at BB07. It sits proudly on my desk.

I do not have a lot of pictures. I was more into building than recording. Even pictures of it in action are few. When we are driving, nobody wants to stop and take pictures. We hit a jump and go on to the next. I have more pictures of Moab than the desert.

Hope this was not too boring. I have never spelled it out like this. Usually a guy is looking at one thing and wants it explained.

Everything works in the truck, even the clock, A/C, and dome lights.

http://s199.photobucket.com/albums/aa139/ktmoutfront/

This is one build picture. See the links for more.
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/IM000428.jpg

bowtieboy4life2000
02-08-2008, 03:26 PM
that is one fun A$$ truck

ktmoutfront
02-08-2008, 03:28 PM
Thanks.

rdn2blazer
02-08-2008, 07:06 PM
WOOHH COOL! you got a new forum for prerunners started, awesome.

Avery4jc
02-08-2008, 10:41 PM
Thanks for the write up man! It's such a unique blazer...

http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0148.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0150.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0146.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/IM000488.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/IM000400.jpg


Oh and yeah rdn2blazer I asked the boss months ago if we could try out a new sub-forum for pre-runners and desert racing because as much fun as the rocks look... for some of us going fast and playing in the sand is the best feeling. :)
Anyways he decided to give it a whirl to see if there was any interest...

kgblazerfive
02-10-2008, 02:22 PM
I love your truck going to steal some ideas for mine hope you don't mind :D

ktmoutfront
02-10-2008, 05:44 PM
I love your truck going to steal some ideas for mine hope you don't mind :D

No problem. If you need advise. I can give it. It may not be good advice, but it will be correct in my mind.

AJMBLAZER
02-14-2008, 04:44 PM
Nice!

Randy92782
02-14-2008, 05:04 PM
Everything works in the truck, even the clock, A/C, and dome lights.
Is there a reason for this ?? :D :haha::haha:

That truck is badass man!! Nice work :bow:

ktmoutfront
02-14-2008, 06:31 PM
Is there a reason for this ?? :D :haha::haha:

That truck is badass man!! Nice work :bow:

In the So Ca. desert, it was needed. Not so much here in Colorado.

jp0863
02-21-2008, 10:16 AM
where were the photo's taken of you tow rig? looks an awful lot like dumont dune's...

ktmoutfront
02-21-2008, 12:02 PM
where were the photo's taken of you tow rig? looks an awful lot like dumont dune's...

Ocottio Wells.

nicks93kblazer
02-29-2008, 01:36 AM
I'm a fan of this build :eek1: I'm looking for some new coilover mounting ideas up front on my rig with a little more beef. I think my current set up is fine for the average usage but I'm a little unsure of it dropping off of a ledge at speed. Would you mind posting extra pics of how your shock towers tie in to the frame and the outside of the motor cage along the fenders? I've been trying to find a way to pull something like that off. thanks!

ktmoutfront
02-29-2008, 06:56 AM
I will post some up tonight.

PGW
02-29-2008, 07:19 AM
That is one badass K5. :cool1:

ktmoutfront
02-29-2008, 07:17 PM
I'm a fan of this build :eek1: I'm looking for some new coilover mounting ideas up front on my rig with a little more beef. I think my current set up is fine for the average usage but I'm a little unsure of it dropping off of a ledge at speed. Would you mind posting extra pics of how your shock towers tie in to the frame and the outside of the motor cage along the fenders? I've been trying to find a way to pull something like that off. thanks!

Here are the pictures I promised. For more, see my photobucket link.


http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0054.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0052.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0048.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0047.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0046.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0045.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0016.jpg

nicks93kblazer
02-29-2008, 09:09 PM
Thanks for the pics. I'm looking for ways to at some point mount my coilovers further out away from the frame and have them mounted on vertical tabs rather than horizontally with a little more surface area to be welded. the pics of the cage foot tieing into the frame help out :bow:

ktmoutfront
02-29-2008, 09:49 PM
Just remember one thing while designing it. When the axle articulates, the tires roll in at the top. Mine rub where they are now. Any farther out and damage would occur.

Avery4jc
02-29-2008, 11:43 PM
That truck is so sweet...
So does the crosmember above the engine bolt in and out or would you have to cut it out to pull the engine?

ktmoutfront
03-01-2008, 06:21 PM
That truck is so sweet...
So does the crosmember above the engine bolt in and out or would you have to cut it out to pull the engine?


It is removable. used Camburg tubing connectors.

nicks93kblazer
03-02-2008, 02:13 PM
As of right now they lean in maybe 1.5-2 inches which I like but its a pretty tight fit next to the frame. Everything clears though.

ktmoutfront
03-02-2008, 03:45 PM
I would leave them there if it clears and run it through it's articulation.

virgilh
03-05-2008, 11:12 AM
nice build could i see the steering pics it looks close to the fun buggy in petersons

79chevyk10
03-07-2008, 12:25 PM
Very nice!! I would love to bomb in that inbetween trails at the Hammers. 2 questions for ya. How much uptravel to you have front and rear? and Do you have that front D44 heavily trussed? I assume you do, any pics?

ktmoutfront
03-09-2008, 07:21 PM
Here are pictures of the front end at full droop. From static it runs 7" up and 11" down.

http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0083.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0082.jpg
http://i199.photobucket.com/albums/aa139/ktmoutfront/Jimmy%20build/DSCF0081.jpg

kevin400ex
03-12-2008, 11:08 PM
hows it steer at speed with the full hydro setup? most guys run a crossover setup.

im planning on doing the same suspension setup on my blazer later this year after a pismo trip in july.

ktmoutfront
03-13-2008, 06:53 AM
This 3 link will not work with cross over steering. I tried it. To much bump steer to drive it over 30 mph. Full hydro is not recommended for the street. I can drive it at 60 mph on pavement, but an hours worth makes me tired. On dirt it works great. Thats where the truck was designed to perform.

SUB602
04-18-2008, 09:36 AM
How are the front links mounted to the Axle? I notice that the link bars by the shocks are located above the axle centerline. Is the Triangulated link in front mounted above or below axle centerline on the axle? Also do you have better pics of the Crossmember to support the front links? I checked your album and couldnt see any pics of behind the front axle. Thanks

Top notch build i love the versatility of your blazer:waytogo:

jekquistk5
04-18-2008, 09:58 AM
Wow your k5 is amazing, I bet it rides really nice. Once I find the money tree I will build a buggy with a 3 or 4 link with coilovers.

ktmoutfront
04-18-2008, 08:16 PM
How are the front links mounted to the Axle? I notice that the link bars by the shocks are located above the axle centerline. Is the Triangulated link in front mounted above or below axle centerline on the axle? Also do you have better pics of the Crossmember to support the front links? I checked your album and couldnt see any pics of behind the front axle. Thanks

Top notch build i love the versatility of your blazer:waytogo:

The third link is below the axle next to the pumpkin. That is why the bracing is in place in front of the axle. A lot of body roll due to a low roll center. The brace bolts under the cover and to other brackets welded to the long axle tube. All of that is going away soon. A 4 link and panhard bar is going in with the original crossover steering that I built. I want to be able to drive it to work if I want too.

blowedupmotor87
04-26-2008, 01:37 AM
Awesome build man! Someday, I would really like to do something similar! WOW!:bow::bow::bow:

PeteH
06-19-2008, 12:24 PM
you had radius arms in the front before. how were they set up?
what heims/ bushings did you use for the arms?
panhard bar heims/bushings?
any pics?
i just wanted to see how it was setup trying to figure out what left you hating them. and what broke? people race with radius arms and they can work(i'm not saying other things wont work). moss bros are an example of r arms in class3 who have won.
"I did not like the way the front end moved side to side as you went through the travel...Now it is 3 linked..." and i think you wrote you're going 4 link, panhard bar with crossover for street driving.
if you go to 4 link with panhard bar it will move side to side just like your radius arms did. yes it will most likely articulate more than the radius arms.
I would think the radius arms have a better street manner then 4 linked running without a swaybar(you said you didnt have room for one)
but anyways just thinking out loud.... i like the idea of 4 link with panhard and swaybar(i would really try to fit it). i wouldnt really be too concerned of axle deflection on the street you're not a indy car and in the dirt you shoudnt really notice it...
hmmmnn actually more that i think about it with your 18 inches of travel your going to have to have a really long pan hard bar to minimize the deflection. so now i see how you felt the axle move so drastically. when you ride through the desert you could strap the front for shorter travel.
some people have success with the "small" travel because the front end will skim across the terrain.
through the 18 inches of travel and longest panhard youd probably get at minimum 3 inches of deflection throuout the entire cycle.
i guess thats why some guys can get away with radius arms , they have bout 12 inches of travel and can be designed to have little movement left and right.
but yea articulations not so great. but i dont know..
..again just thinking a loud...:D

ktmoutfront
06-23-2008, 09:19 PM
Sorry it took so long. I did not see the post. I do not have good pictures of the initial build on the front end.

Heims at the back of the arms, neo. bushings on the front top and bottom.

Panhard bar, heim at frame and bushing at the axle. Bar was level at static. At full droop i had 2.25 inches to the right. Full compression was .5 inches to the left. Almost 3 inches. Did not notice anything on the street. Was easy to drive. The lack of articulation is was tore it off of the truck. Ran great at 50mph in the desert. Went down a was at 5mph and tore the right arm mount off of the frame.

1bgsub
07-03-2008, 06:17 AM
Just found this thread and what a great build it has given me a few ideas for my next project, a 91’ burb with a 454, 4l80e with about 6” of lift. I’m looking at doing some sort of 3 or 4 link front suspension so I can run the beach (Padre Island National Seashore) with out getting bounced around so much. Thanks for the info.

later
Trey