72 gmc duramax build - The 1947 - Present Chevrolet & GMC Truck Message Board Network

85chevytrucker · 08-15-2019, 11:28 AM

Hi thought I'd start a build thread on my current project. It's a 72 gmc that I've had kicking around in my back yard for a couple years now. I also had a bunch of duramax parts leftover from previous builds and figured I might as well build something with it all. Frame was an 05 3/4 ton reg cab with 6.0. Stripped it down and moved axle ahead about 6 inches. Also had to put a shortbed fuel tank to clear axle and added a fass fuel system I had

85chevytrucker · 08-15-2019, 11:35 AM

Cab floor was rusty so I ordered one piece floor cab corners rockers and kick panels. Last weekend I cut the floor out. A few hours later cab floor was tacked in place and cab was set on frame.

85chevytrucker · 08-15-2019, 11:42 AM

Sat the engine and trans in and then lowered cab onto frame to see how it fit. The floor fits the new chassis nicely. The bed floor will have to be raised about 4.5 inches to match cab. Engine is an lb7 with 68mm turbo profab manifolds and uppipes. Getting some bigger nozzles for it also.

Snake72 · 08-16-2019, 10:05 AM

Very nice work so far! The one piece floor replacements are great. I sprayed my new floor top and bottom with raptor liner to protect the new metal. How did the cab mounts line up on the duramax frame? Great choice on the LB7 too, I love my deleted LML daily driver.

85chevytrucker · 08-16-2019, 10:46 AM

Thanks. The front cab mount lines up with an existing hole in the frame. I just had to drill it bigger and pass a long bolt straight through. The rear mount interfere with fuel tank so I had to make new mounts I'll post pics when I get a chance. I wanted cab to sit lower but the rear is sitting on the fuel tank so without relocating fuel tank it's as low as possible.

cornerstone · 08-18-2019, 09:41 AM

You my friend are no slouch. Quite the undertaking! I'm in!

Brian

85chevytrucker · 08-22-2019, 06:09 PM

Got the radiator support mounted and fit the radiator and intercooler. It fit tighter than I was expecting. I'll have to mount an electric fan in front of the the radiator stack.

**71blksuper4x4** · 08-22-2019, 08:01 PM

Looking good.

**Daubs** · 08-23-2019, 02:25 PM

This. Is. Awesomeness!

72 tigger · 08-24-2019, 09:22 PM

Nice fabrication and welding skills

85chevytrucker · 08-25-2019, 04:48 PM

Thanks. Not as much progress as planned this weekend but I did run fuel lines and trans lines. Going to hook up radiator and intercooler piping this week and hopefully tackle engine wiring. Should be running by the weekend

85chevytrucker · 09-16-2019, 07:08 PM

Got a bit of work done to truck. Intercooler piping is done as well as coolant hoses. Mounted throttle pedal and built shifter linkage. Also wired up engine and fired it up. Just need to build a driveshaft and I'll be able to move it around

67C10GS · 09-17-2019, 01:23 PM

its nice to see someone tackle a dmax build every once in a while. cant wait to see it rip around.

85chevytrucker · 09-17-2019, 06:45 PM

Yea it's a nice change of pace. Done so many ls swap they were kinda starting to get boring. Took a short vid of first start last night. Wiring is mess going to mount battery pcm and tcm and then clean up harness. Link to vid https://m.youtube.com/watch?v=inFJgk2cx4Q

85chevytrucker · 10-20-2019, 02:11 PM

Put a rear seat from an 08 crew cab. Took alot of modifying and not sure how I feel about it. I think I'm going look for a factory bench seat.

85chevytrucker · 02-08-2020, 06:39 AM

Took some time away from truck to attend to other projects but I've started back on it. Put new door bottoms inside and out and started on bodywork. I also had to fill and bodywork a bunch of holes from previous mirrors

Inverter · 02-08-2020, 11:21 AM

This is a proper diesel build. One need not create an abomination of the Cummins kind.

08-15-2019, 11:28 AM	#1
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	72 gmc duramax build Hi thought I'd start a build thread on my current project. It's a 72 gmc that I've had kicking around in my back yard for a couple years now. I also had a bunch of duramax parts leftover from previous builds and figured I might as well build something with it all. Frame was an 05 3/4 ton reg cab with 6.0. Stripped it down and moved axle ahead about 6 inches. Also had to put a shortbed fuel tank to clear axle and added a fass fuel system I had Attached Images

08-15-2019, 11:35 AM	#2
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Cab floor was rusty so I ordered one piece floor cab corners rockers and kick panels. Last weekend I cut the floor out. A few hours later cab floor was tacked in place and cab was set on frame. Attached Images

08-15-2019, 11:42 AM	#3
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Sat the engine and trans in and then lowered cab onto frame to see how it fit. The floor fits the new chassis nicely. The bed floor will have to be raised about 4.5 inches to match cab. Engine is an lb7 with 68mm turbo profab manifolds and uppipes. Getting some bigger nozzles for it also. Attached Images

08-16-2019, 10:05 AM	#4
Snake72 Registered User Join Date: Jan 2017 Location: Iowa Posts: 267	Re: 72 gmc duramax build Very nice work so far! The one piece floor replacements are great. I sprayed my new floor top and bottom with raptor liner to protect the new metal. How did the cab mounts line up on the duramax frame? Great choice on the LB7 too, I love my deleted LML daily driver.

08-16-2019, 10:46 AM	#5
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Thanks. The front cab mount lines up with an existing hole in the frame. I just had to drill it bigger and pass a long bolt straight through. The rear mount interfere with fuel tank so I had to make new mounts I'll post pics when I get a chance. I wanted cab to sit lower but the rear is sitting on the fuel tank so without relocating fuel tank it's as low as possible.

08-18-2019, 09:41 AM	#6
cornerstone Registered User Join Date: Apr 2014 Location: Azle,Texas Posts: 2,248	Re: 72 gmc duramax build You my friend are no slouch. Quite the undertaking! I'm in! Brian __________________ Brian 1972 C10, "Loyd", LWB to SWB, 5.3, L83/6L80e, 4:11 Tru Trac, Air Ride, VA, DD, 20" Coys, 4 wheel disc, A quick LS swap turned into a 6 year frame off resto-mod.

08-22-2019, 06:09 PM	#7
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Got the radiator support mounted and fit the radiator and intercooler. It fit tighter than I was expecting. I'll have to mount an electric fan in front of the the radiator stack. Attached Images

08-22-2019, 08:01 PM	#8
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,156	Re: 72 gmc duramax build Looking good. __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

08-23-2019, 02:25 PM	#9
Daubs Registered User Join Date: Jan 2005 Location: Eastern Nebraska Posts: 613	Re: 72 gmc duramax build This. Is. Awesomeness! __________________ '72 Chevy K-20 Crate 350, SM465, 4.10's

08-24-2019, 09:22 PM	#10
72 tigger Registered User Join Date: Apr 2008 Location: Berne IN Posts: 3,254	Re: 72 gmc duramax build Nice fabrication and welding skills

08-25-2019, 04:48 PM	#11
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Thanks. Not as much progress as planned this weekend but I did run fuel lines and trans lines. Going to hook up radiator and intercooler piping this week and hopefully tackle engine wiring. Should be running by the weekend

09-16-2019, 07:08 PM	#12
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Got a bit of work done to truck. Intercooler piping is done as well as coolant hoses. Mounted throttle pedal and built shifter linkage. Also wired up engine and fired it up. Just need to build a driveshaft and I'll be able to move it around Attached Images

09-17-2019, 01:23 PM	#13
67C10GS Registered User Join Date: Dec 2018 Location: Jerome, ID Posts: 77	Re: 72 gmc duramax build its nice to see someone tackle a dmax build every once in a while. cant wait to see it rip around. __________________ 1967 GMC C15 sb 6.0 lq4 pro daily. Named the “formula 10”

09-17-2019, 06:45 PM	#14
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Yea it's a nice change of pace. Done so many ls swap they were kinda starting to get boring. Took a short vid of first start last night. Wiring is mess going to mount battery pcm and tcm and then clean up harness. Link to vid https://m.youtube.com/watch?v=inFJgk2cx4Q

10-20-2019, 02:11 PM	#15
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Put a rear seat from an 08 crew cab. Took alot of modifying and not sure how I feel about it. I think I'm going look for a factory bench seat. Attached Images



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02-08-2020, 06:39 AM	#16
85chevytrucker Registered User Join Date: Apr 2017 Location: Fort Kent Maine Posts: 28	Re: 72 gmc duramax build Took some time away from truck to attend to other projects but I've started back on it. Put new door bottoms inside and out and started on bodywork. I also had to fill and bodywork a bunch of holes from previous mirrors Attached Images

02-08-2020, 11:21 AM	#17
Inverter Registered User Join Date: Mar 2007 Location: East Texas Posts: 429	Re: 72 gmc duramax build This is a proper diesel build. One need not create an abomination of the Cummins kind. __________________ TROY My work ~ https://www.67-72chevytrucks.com/vbo...d.php?t=799484

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