Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I'm glad your wife is doing better and glad you are back! Looking forward to more progress pics. :metal:

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

This build is great. It is a project I have thought of doing myself, reading through what you have done and have to do is great insight. Great work!!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Would love to chat sometime and compare notes on steering, pedals, and gauges. I completed my mounts for the steering but still need to fit the 2003 gauges into the dash.
Dale

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I have some pictures of how I did my brake pedal. I wanted to use the 2003 pedal. The 2003 has a large plate that mounts to the firewall. It has the hole for the steering column, and the hole for the brakes. I just lined the hole for the steering column of the plate, to the '72 hole on the firewall. Then I cut the holes out of the firewall to match the plate, and bolted it in. This puts the 2003 brake pedal too far to the left, so I had to bend it in the right location.
Here is a picture of the old brake pedal in it's original position, and the new pedal in it's original location.
http://i1253.photobucket.com/albums/...ps54749750.jpg

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I made a template of the original brake pedal, and tack welded it to the floor so I could remove the old pedal and still know exactly where it was supposed to go.
http://i1253.photobucket.com/albums/...psdcd78716.jpg

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Then I removed the new pedal, and used a torch to heat it up, and bend it until it was in the right location of the old pedal.
http://i1253.photobucket.com/albums/...ps78a28ec0.jpg
http://i1253.photobucket.com/albums/...psbb3da625.jpg

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

You should tack a couple guessets in the bends of the brake petal, after heating, bending and cooling youve compromised the strength a little, and since brakes are kinda important, it would probably be worth the 10 minutes to tack in a little extra support. Are you gonna have to do the same with the gas petal?

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Hey any updates on the build?

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

subscribed!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Working on the front wheel wells now. I'll post some pics later today hopefully.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Good luck on the inner fenders. Those were the biggest pain of my build so far. Trying to make room for 2 batteries, fuse block, surge tank and air box. What I would have given for an English wheel

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

http://i1253.photobucket.com/albums/...ps3cae4aa1.jpg


The frame on the 2003 is a lot wider than the 1972 frame. I had to cut out the inner part of the inner fender, and make a piece to fit the 2003 frame.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

http://i1253.photobucket.com/albums/...ps20c95f29.jpg


I needed a spot to put all the computers on the inner fender. I cut off the top and welded in a flat spot to mount them to. This idea is still in the works.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

http://i1253.photobucket.com/albums/...psfe388f2d.jpg


I have about a 1/4" clearance for the turbo piping. I think I might need a little more, not sure.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

http://i1253.photobucket.com/albums/...ps13f519b2.jpg


Here's what it looks like on the passenger side so far. I got the inner fender to follow the frame pretty good. Still needs some smoothing out, but it works. Sorry for the blurry pic.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I never would have thought making inner fenders would take this long, and they still need work. After I get that and the computers mounted, I think I am ready to give the cab to the painter to shoot the firewall, and interior. That was our plan. I would weld everything up, and mount everything. Then I would take it apart and give the painter the cab. After he shoots the firewall, and interior, I would get it running, and he would finish painting it.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Sounds like a good plan. Those inner fenders look nice. I had a lot of time in putting mine in and pulling them out trimming for all the piping. Later I plan to redo them do there is more area covering the engine. Keep up the great work!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Any new progress. I just updated my thread
http://67-72chevytrucks.com/vboard/s...=1#post6699722
Moving into primer then tear down to paint jams and firewall before final assembly

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Wow!!! Watching this. I have a 87 gmc v1500 single cab longbed 4x4 I am doing an ls swap in and i bought a donor 01 ext cab short bed 4x4 silverado.. I am wanting to do frame swap but am a little intimidated by it..

Love to hear how using all the wiring works, I definitely plan to do that!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Did I miss who is doing your harness? You keeping the abs?

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I will starting a similar project, but with a 2500HD extended cab long bed. I plan to make mine a 68 GMC and an 8 stake bed. Did you just cut off 16.5 inches from the front and slide it back together? Or was yours not a long bed chassis?

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I removed it from the rear part of the frame.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Ok. I assume this truck has torsion bars? Did you just relocate the crossmember?

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Awesome project!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Sweet! I hope your wife is doing good as well, keep up the good work.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I just drilled new holes for the cross member. My wife is doing great. Thanks for asking. Just hit the 2 year mark that she has been in remission. I am working on the interior now. Trying to decide if I want to use the 1972 light switch, or all the 2003 switches.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Use the 2003 switches so I can copy your hard work. I'm thinking of using the 2004 stuff I have. I started cutting up my 71 instrument cluster to fit 2004 in to it. having issues with the steering column.

Look at Lazzardkng's build. He did a good job using the newer switches.
Posted via Mobile Device

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I tried to search for Lazzardkng and did not find anything.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I have the opportunity to pick up an LBZ truck to swap into my C20. These might be similar builds... except mine is going to be bagged.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Read the whole build so far, wonder how many hours you have in this build so far. Or what someone would charge to do this conversion??

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I got the truck started. All I had to do was hook up the ground wires since I didn't cut any wires. I hooked up the batteries, and after 5 years of sitting it cranked over about 3 times, and started right up. The turbo didn't want to turn, but it's fine now. I had 0 oil pressure, but it was just the sender.https://youtu.be/_gxnzXOWzAk I made a video of it running.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

That's awesome! Good job!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

any updates??

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Any updates on this truck? please update your account so we can see the pictures> :metal:

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Photobucket sucks now. You get charged $39.99 a month if you want to show your images. Have to find a new site to use.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

Want to do this exact build with my 69 c20 any info u can give me or pictures would be much appreciated if u want my number let me know, I've been wanting to do this for 3 years now

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

I don't use photo bucket, I refuse to pay as well, but i can post my pics in threads if I'm on my laptop or desktop. When you click on post reply the window comes up to reply in. As long as you have your pics on your cpu you can click the little paperclip by the smiley face in the top menu bar and you can upload pics right there, max of five at a time. I haven't figured out how to do it from my phone or in pms though. Im looking at doing this same conversion to my wifes 69 suburban and would LOVE to see some pics!!

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

https://youtu.be/DKzGlAMLlGI
Here is a video of my progress. I'm back to hitting the build pretty hard.

Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis
 

https://youtu.be/9NoENBp-gto
I had the chassis sandblasted. I painted it with Eastwood chassis black. I just about have the rolling chassis back together and painted.