Re: 1976 CCSB Duramax Project #trucknamedsue
 

stay tuned, more to come!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Time for a update! Way over due as usual!

Finished up some final suspension/frame pieces.

first up was a little spreader bar between the 4-link mounts.
https://i.imgur.com/Af3FQJP.jpg

https://i.imgur.com/8Vis39h.jpg

then I worked on the spare tire carrier and rear frame supports. I wanted to tie the hitch in well, and have a spare tire winch. I designed around the 2014 donor truck winch.
https://i.imgur.com/9homwIG.jpg

https://i.imgur.com/7t5jbdW.jpg

https://i.imgur.com/iyBBayB.jpg

finally found the set of wheels I've been looking for. 20x10 Weld Racing Cheyenne wheels. in 8 on 170 pattern. I will convert the rear to work, front will remain stock. This is due to the rear hubs being a non-wear item but the front unit bearings are. I just peaked in the wheel boxes and put them in storage.
https://i.imgur.com/oVrLgRB.jpg

finished out front crossmember and steering box supports. This will give me a ton more lower radiator clearance and be stronger than the OEM piece. It also integrates and shares a bolt with the sway bar mounts.
https://i.imgur.com/q4YyHEN.jpg

notched the tie bar in the front to clear the master.
https://i.imgur.com/M8lgsaH.jpg

then I started the massive journey of the exhaust and hangers and such. I did a 3" out the turbo and merged to 4" along side the transmission. 20" magnaflow muffler and a 5" dual wall tip. The dual wall tip is not just for looks but also so the tip doesn't drone and magnify the exhaust note. I don't want a loud truck, but some good sound should be nice. Used all the rubber hangers from the donor truck to hold the exhaust firm in place, but let it live.

started at the front using a stainless ebay downpipe. Cut off the 9th injector bung and fabricated a new lower downpipe mount since I rotated the downpipe in from factory position. also cut off the factory bubble flange.
https://i.imgur.com/qZPVDat.jpg

https://i.imgur.com/RQd0xUu.jpg

making my way rearward-
https://i.imgur.com/JwsJQ6o.jpg

https://i.imgur.com/i96Ynra.jpg

https://i.imgur.com/Yq5TZE3.jpg

https://i.imgur.com/UTZzHry.jpg

https://i.imgur.com/mEd6O7D.jpg

welding out-
https://i.imgur.com/qIlbyGl.jpg

https://i.imgur.com/nV5SJuH.jpg

bent up a front hanger-
https://i.imgur.com/eLsjwVV.jpg

https://i.imgur.com/4JzCgvF.jpg

https://i.imgur.com/3Z6kLTR.jpg

hung muffler up tight-
https://i.imgur.com/XJCb19T.jpg

https://i.imgur.com/LG48lxN.jpg

exhaust hanger bent up-
https://i.imgur.com/rXLFp5P.jpg

exhaust hanger on the muffler, ready for welding
https://i.imgur.com/PbWjh2G.jpg

hung
https://i.imgur.com/zw9CrjE.jpg

final rear section over the axle-
https://i.imgur.com/1XpbcKL.jpg

https://i.imgur.com/tlLWSDK.jpg

https://i.imgur.com/rxCIMOD.jpg

https://i.imgur.com/hf9n4df.jpg

https://i.imgur.com/vaSpun4.jpg

https://i.imgur.com/1wDPzpI.jpg

welding out the rear-
https://i.imgur.com/9qMDtJp.jpg

https://i.imgur.com/lg66tT9.jpg

https://i.imgur.com/cJjY5OU.jpg

rear hanger
https://i.imgur.com/0awiK1c.jpg

Re: 1976 CCSB Duramax Project #trucknamedsue
 

The steering column finally came in. Beware ordering from IDIDIT. It will take WEEEEKS.:waah: but it does look nice when it comes in.
https://i.imgur.com/40LWbaF.jpg

planning out my steering wheel angle sensor-
https://i.imgur.com/BsZtuZz.jpg

got the brake position sensor mounted in. studied the stock setup from the 2014 and mimicked it.

machined a pin for the brake arm.
https://i.imgur.com/uqP6tmS.jpg

https://i.imgur.com/zdwgqht.jpg

welded to a plate to bolt to the arm.
https://i.imgur.com/F4TaaUY.jpg

https://i.imgur.com/ZiFOgO2.jpg

everything fit up-
https://i.imgur.com/XqBtNpT.jpg

https://i.imgur.com/5E9SbAI.jpg

welded-
https://i.imgur.com/iYqNdfl.jpg

in the truck, clears the column and brake arm well.
https://i.imgur.com/k9xW7zI.jpg

https://i.imgur.com/kEBCZrY.jpg

and it works-
https://i.imgur.com/FJJk7Sz.mp4

then I started working on the front fenders. I wanted to knock out some body work to keep it from piling up at the end.

I decided it was best to pull the fenders apart and take the skins off. Then I can fully blast and prime every surface and fix all the damage much easier.

separated-
https://i.imgur.com/7Cr1PrN.jpg

nasty inside, and lots of damage.
https://i.imgur.com/Xj8QrbK.jpg

https://i.imgur.com/94fEkep.jpg

https://i.imgur.com/qmaE9rN.jpg

https://i.imgur.com/GANIMEO.jpg

fixed-
https://i.imgur.com/vwVT0ps.jpg

inside of the inner/outer, primed and blacked out with weld thru on the edges.
https://i.imgur.com/8j4ykTG.jpg

https://i.imgur.com/OvKKBjb.jpg

back together- took about 3 hrs to take apart, 3 hours to put back together, about 2 hours to fix all the damage plus blast and prime work. So no small feat.
https://i.imgur.com/SuHE9RX.jpg

I'm currently working on the passenger fender. Got it ripped apart and ready for blasting. And I'll be working on body work for the drivers.


Hope yall enjoy:gmc2:

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I really like your exhaust work and usage of oem type hangers. Phenomenal work!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Oh man soooooo much awesome fab work!!! Please hurry up and get done so you can build replica parts for me!! LOL but seriously

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Man. So methodical and precise. But great progress as well. Thank you for taking pictures in little steps along the way and posting them.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

thanks! yeah I really think the OEM hangers are the best available. I cut all the forged stems off the frame as well before it was scrapped, so I could use them. Worked well.

I'm rolling just about as fast as I can. I'm long ready for this truck to be on the road.

yep- I have more pictures than I post as well. Let me know if you want to see something in more detail.

This truck was on the drawing board for a long time before any metal was cut. I think that's one reason for steady progress. I never go to work on it and sit and scratch my head- its usually already planned and I just have to do it. I keep my planning and part ordering about 2wks ahead of my actual progress.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Very nice work! There are many, many hours in these pics! The exhaust turned out awesome! You have some skills sir!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

thanks! it is crazy how a single picture can represent so much effort. :lol:

BTW- I'm still working on getting the picture sizes to work correct. photobucket was so easy but since their screw ups I been trying to use imgur.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Nice work on the exhaust!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I think your picture size is just fine.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Awesome build!!!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

thanks guys. I figure I'm due for an update.

got the fender body worked and shot in poly primer, followed by blocking it back out and getting it shot in some urethane.

https://i.imgur.com/EjVJ1pO.jpg

https://i.imgur.com/6kNTdvz.jpg

https://i.imgur.com/MWKZVf7.jpg

https://i.imgur.com/hZx85Z2.jpg

sent a couple days getting the bed straighter than it was, blocked out and primed twice more. It now awaits final block and paint.

https://i.imgur.com/d0IhlU6.jpg

https://i.imgur.com/RePTHQT.jpg

got the gooseneck holes cut. it was hard to cut into a perfect bedfloor.
https://i.imgur.com/ZSfhtO7.jpg

front brake lines came in from crowne. They are stainless but I had them covered in a black rubber slip. That way they aren't too bling bling.

https://i.imgur.com/fzROUsF.jpg

then I started working on the column. First order of business was to move the mounts up 1-7/8" to shorten it.

where I started-
https://i.imgur.com/dWlOjlQ.jpg

housing marked with tape and cut
https://i.imgur.com/ux4gfSB.jpg

https://i.imgur.com/dHrV7cc.jpg

I cut off one mount at a time, welded up any cut-off tool grooves and ground back flat, then used the stock mounting bracket to realign the mount 1-7/8" forward.

https://i.imgur.com/r7U2x2r.jpg

https://i.imgur.com/Z2RYin1.jpg

https://i.imgur.com/Mg9kMpD.jpg

eventually got both moved up forward.
https://i.imgur.com/V93Lpvr.jpg

I've been working on the steering wheel angle sensor for a while now.

this is the general idea. to split the column tube to house the sensor.
https://i.imgur.com/IXLicCU.jpg

sent the housings out to get made. they are cut from stainless.
https://i.imgur.com/bHVntog.jpg

https://i.imgur.com/zpcMlfB.png

https://i.imgur.com/jqvj6Vy.jpg

https://i.imgur.com/QmNPenm.jpg

https://i.imgur.com/hewlLT3.jpg

the machine that cut them . a 5axis dmg mori.
https://i.imgur.com/TP9ueUv.png

sensor fitted in housings
https://i.imgur.com/6Zd0z8x.jpg

I had models 3d printed that are split in half so I can slip around the OD of the column to find the best spot for the sensor.
https://i.imgur.com/pkG6dVX.jpg?1

I can tuck it right in up top in the dash. so it should be unnoticeable.
https://i.imgur.com/RF3vgfr.jpg

with the location figured I got the model built out will all the lengths figured.
https://i.imgur.com/T4a8JXP.png

cut the column housing. also hard to do, these things aren't cheap.
https://i.imgur.com/5ZDLPCQ.jpg?1

and cut the lower column shaft. and weld preped it for a full-pen. I will machine a slug to go on the inside to line everything up and add in some plug welds.
https://i.imgur.com/ohoq5Qa.jpg

https://i.imgur.com/L0PPUQS.jpg

getting the sensor fitted to the column housing. used the big lathe and a dial indicator to set run out.
https://i.imgur.com/Woh1bry.jpg

https://i.imgur.com/f90Csrs.jpg

https://i.imgur.com/gIPud67.mp4

also worked on the sensor key in the bridgeport. This piece will key the sensor to the steering column shaft.
https://i.imgur.com/YwYqsyR.jpg

https://i.imgur.com/zmsgd0z.jpg

for the turn signal I am using late model GM parts to gain the 7 position wipers and cruise control. I bought a few stalks and figured out how to take them apart with breaking them. Then I measured up the OEM parts and redrew them to interface with the IDIDIT column. printed some test parts out of ABS.
https://i.imgur.com/GzBnP4x.jpg

here is the stock stalk and the one I made with the pieces on the end. I will have the final one professionally printed.
https://i.imgur.com/itBSjTf.jpg

that's about where I'm at right now. Have some more work on the column then I'll prime the housings and put it all back together. Getting closer to knocking out some of these smaller projects and then it'll be time to paint the frame and all the components.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Incredible work!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Wow, just WOW...

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Daaaaaannnnnng! That's some high end stuff! This is gonna be cool.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I can't tell you how great it is to catch updates here and on IG. Someday I hope to be able to put this much time & detail into a build. Great work!

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Steering wheel position sensor... in a square body. I assume that you are going to adapt all of the ABS stuff and even ESC?

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Thanks guys! It's yalls support that keeps me moving.

yes I am keeping all the GMT900 BCM, EBCM and the pitch/yaw sensor. So the truck will have ABS, stabilitrak, integrated trailer brakes with trailer sway control and anything else a 2014 has. I will be keeping onstar as well and using the newer style rearview mirror with backup camera in the glass.

One of the reasons I chose the LML duramax was the body electronics side of things. I could have much easier and cheaper used the LBZ but the older ABS was crap compared to the GMT900 LML.

This truck I'm building will have all the safety features a new truck has minus airbags and restraints control. The goal is to stuff all this new technology under the cover of the '76. I want the dash to remain as stock appearing as I can. This is why I worked to hide the wheel angle sensor, and the brake position sensor. If the average person doesn't notice anything out of place, that would be perfect.

If later I feel like drilling the bumpers for the sonar systems I can custom flash the BCM and do adaptive cruise like the tahoes have. That would be pretty cool as well. :metal:

Re: 1976 CCSB Duramax Project #trucknamedsue
 

With your desire to have a stock looking interior will you be painting/coating that shiny steering column? What was the reasoning behind using that aftermarket column as opposed to a late square column with the wiper controls on the lever?

What are you doing for the dash bezel with regard to wiper switch hole?

Re: 1976 CCSB Duramax Project #trucknamedsue
 

yes I'm either painting the column black like factory or maybe an alternative interior color.

The factory column is made of pot metal and not easily modified. I needed the aftermarket column so I had materials that can be cut, welded, modified, etc. I also wanted to start with new parts. The IDIDIT is based on 70s-80s technology/design anyways, so its a 1 for 1 swap.

I'm using the late model turn signal stalk for several reasons. First it gives me cruise control that will interface my BCM, as they are resistor ladder. They aren't discrete switches. The wiper controls are on the stalk as well, which again will work with the LML BCM and the LML wiper motor, which I also will be using.

The previous location in the dash for the wiper switch will probably become the integrated trailer brake controller, which can look very similar at first glance.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I love heavily modified builds that look as OEM as possible, I figured the column would be black...but now that you mention a custom interior color I dig it.

Makes sense, I haven't looked into or seen anyone analyze the materials used in the earlier columns.

The electronic needs make sense. In the original GMT900 column was high beam push forward on the lever with a momentary pull back to flash? It's been a while since I was in a 900, I don't think my dad's '11 is but I can't remember.

Oh, the ITBC...that is f***ing genius. :metal: I bet a billet slider (or stainless (easy polishing)) could be machined for the controller that looked like the wiper switch. Know anyone with some tiny end mills? :lol:

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I'm not settled on steering column colors yet. But I am thinking about it. I'll have a billet steering wheel and a lokar floor shifter for the allison, so the interior won't be completely stock...but I want it to be pretty close. It's a fine line to walk.

I've thought about doing a medium tan leather seats and wrapped dash cover with a matching painted dash/column. But then I wonder what to do on the doors. With the smaller door panels, much of the door is left visible to the interior. I need to search around and look at some more pictures of the early trucks with different interiors and make some decisions. This is something I want to do sooner than later so I can paint the column and finish it out. Right now it is primed though.

the original turn stalk did go forwards/back for high beams. I thought about making mine do that, but gave up on. I'll keep the stock foot high beam switch or I've thought about redesigning the factory headlight switch to have a 3rd detent and high beams be there.

The trailer brake controller should be fun. Haven't started on that at all and won't for a while. Not until after the truck is driving anyways.

Re: 1976 CCSB Duramax Project #trucknamedsue
 

I hope I have skills like you one day...

Re: 1976 CCSB Duramax Project #trucknamedsue
 

Incredible build!! ������

Ever have any thoughts on going solo & building aftermarket parts for John Q. Public?