1972 GMC Using 2003 Chevy 2500HD duramax Chassis - Page 5 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1tonwannabe · 11-22-2013, 06:13 PM

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.

1tonwannabe · 11-22-2013, 06:15 PM

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.

1tonwannabe · 11-22-2013, 06:18 PM

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.

bufmatmuslepants · 11-28-2013, 10:46 AM

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?

70chevy10 · 03-20-2014, 08:26 PM

Hey any updates on the build?

Vintage Windmills · 03-24-2014, 10:25 PM

subscribed!

1tonwannabe · 04-15-2014, 05:30 AM

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

Lazzardkng · 04-15-2014, 09:26 AM

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

1tonwannabe · 04-23-2014, 06:37 PM

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.

1tonwannabe · 04-23-2014, 06:40 PM

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.

1tonwannabe · 04-23-2014, 06:42 PM

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

1tonwannabe · 04-23-2014, 06:44 PM

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.

**Dieselwrencher** · 04-24-2014, 03:24 PM

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!

Lazzardkng · 05-30-2014, 04:24 PM

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

NastyBuzzard · 06-05-2014, 11:24 AM

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!

jkade · 08-21-2014, 12:00 AM

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

Farm Shop · 05-06-2015, 02:19 PM

Awesome project!

Bladeboy1998 · 05-06-2015, 07:20 PM

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

1tonwannabe · 08-11-2015, 06:30 PM

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.

DWilbur · 08-12-2015, 04:48 AM

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.

1tonwannabe · 08-15-2015, 12:56 AM

Quote:

Originally Posted by DWilbur

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

DWilbur · 08-15-2015, 01:38 AM

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

lsjrl07 · 01-05-2016, 07:41 PM

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.

ruquik · 02-16-2016, 03:26 PM

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??

1tonwannabe · 03-24-2016, 05:14 AM

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.

11-22-2013, 06:13 PM	#1
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	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.

11-22-2013, 06:15 PM	#2
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	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.

11-22-2013, 06:18 PM	#3
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	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.

11-28-2013, 10:46 AM	#4
bufmatmuslepants Junior Member Join Date: May 2007 Location: Hampstead, NC Posts: 313	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? __________________ 1979 K10 reg cab short bed 33x12.50s - GONE 1988 4x4 reg cab long bed 337k miles - GONE 1995 Z71 GU6 G80 F44 ext cab short bed 149k 305/70/16s - GONE 1995 NZZ GT4 2dr Tahoe 3" lift 14 bolt sf 155k 305/70/16s - GONE 1994 Z28 M6 1995 Z71 GT4 G80 ext cab short bed 215k GONE 1997 GT4 G80 Yukon 4 door leather, sunroof 168k miles GONE 2003 Avalanche Z71 GT4 G80 165k miles

03-20-2014, 08:26 PM	#5
70chevy10 Registered User Join Date: Oct 2012 Location: Loxahatchee FL Posts: 201	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis Hey any updates on the build? __________________ 1970 c10 LWB (BIG BUILD UNDERWAY) SEMA 19? 1969 GMC K2500 V6 Step Side Long Bed 2008 F250 650hp CUMMINS SWAPPED Daily Driver + too much to list LAST DROP GARAGE, LLC. Check the Shop out! http://www.lastdropgarage.com

03-24-2014, 10:25 PM	#6
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis subscribed! __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

04-15-2014, 05:30 AM	#7
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis Working on the front wheel wells now. I'll post some pics later today hopefully.

04-15-2014, 09:26 AM	#8
Lazzardkng Registered User Join Date: Aug 2011 Location: Kalama Wa Posts: 146	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 __________________ 1970 Chevrolet + 2003 GMC Duramax 4x4 = Awesome

04-23-2014, 06:37 PM	#9
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis 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.

04-23-2014, 06:40 PM	#10
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis 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.

04-23-2014, 06:42 PM	#11
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis I have about a 1/4" clearance for the turbo piping. I think I might need a little more, not sure.

04-23-2014, 06:44 PM	#12
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis 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.

04-24-2014, 03:24 PM	#13
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,141	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! __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

05-30-2014, 04:24 PM	#14
Lazzardkng Registered User Join Date: Aug 2011 Location: Kalama Wa Posts: 146	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 __________________ 1970 Chevrolet + 2003 GMC Duramax 4x4 = Awesome

06-05-2014, 11:24 AM	#15
NastyBuzzard Registered User Join Date: Oct 2013 Location: Saluda, SC Posts: 1,276	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!



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08-21-2014, 12:00 AM	#16
jkade Senior Member Join Date: Nov 2005 Location: AL Posts: 2,519	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis Did I miss who is doing your harness? You keeping the abs?

05-06-2015, 02:19 PM	#17
Farm Shop Registered User Join Date: Jan 2013 Location: Deer Creek, IL Posts: 145	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis Awesome project! __________________ 1970 SWB 2wd C10, Vortec 454/80e, CPP 3/5, slotted mags, patina 1972 K20 Super Cheyenne, Short bed, EFI 396, NV4500, NP208 1970 GTO Judge, heads/cam LS1 & stalled 4L60e

05-06-2015, 07:20 PM	#18
Bladeboy1998 Registered User Join Date: Nov 2014 Location: Toledo Ohio Posts: 520	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis Sweet! I hope your wife is doing good as well, keep up the good work.

08-11-2015, 06:30 PM	#19
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	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.

08-12-2015, 04:48 AM	#20
DWilbur Registered User Join Date: Aug 2013 Location: San Jose Ca Posts: 965	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.

08-15-2015, 01:38 AM	#22
DWilbur Registered User Join Date: Aug 2013 Location: San Jose Ca Posts: 965	Re: 1972 GMC Using 2003 Chevy 2500HD duramax Chassis I tried to search for Lazzardkng and did not find anything.

01-05-2016, 07:41 PM	#23
lsjrl07 Registered User Join Date: Jul 2010 Location: Bellville, TX Posts: 107	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.

02-16-2016, 03:26 PM	#24
ruquik Registered User Join Date: Apr 2008 Location: Houston Texas Posts: 24	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??

03-24-2016, 05:14 AM	#25
1tonwannabe Registered User Join Date: Jul 2009 Location: Johnstown, Ohio Posts: 146	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. Last edited by 1tonwannabe; 03-24-2016 at 05:21 AM.

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