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10-10-2014, 02:33 AM
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#1 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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78 GMC K25 "build".
I have had this 78 K25 GMC for about six years now. I got it just goof off with and work on here and there. So far thats all thats been done. It was my DD for a while, and now its just a yard debris/junk yard runner. But i plan to change that over the next little while.
I plan on doing a tuff country ex ride 2" lift in the front, 56" spring swap in the rear with an ORD 2.5" shackle flip. Hoping it ends up level. Then i'll do some 255/85-16 toyo MT's on the steel wheels. I got a new bed for it to fix up and replace the one thats on there. Around that time i will also fix the few rust spots on the cab and paint it. For now, here is a bunch of pics. Pics from the original CL add. Swapped the tires out for the ones on my burb, Left the door open one time, And found the my taking a nap in there... More in a sec.
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 02:34 AM
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#2 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Took it to mudfest one year.
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 02:39 AM
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#3 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Also in the snow,
Being put to use around the house,  Next to my subruban.  "fixed" my power steering pump bracket.   Did ball joints.  Pickup and burb. 
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 02:43 AM
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#4 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
At the dump,
 Being used,   At the dump again,  Home from the dump,  Yard debris,  At the yard debris place  New and old. 
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 02:45 AM
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#5 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Re painted the white stripe with rattle cans.
Before,  During,         
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 02:50 AM
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#6 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Got a quadrajet to rebuild and replaced the edelbrock that the truck came with.
 New fuel pump and line,   Put a tilt column in,  Got some steelies and painted them white,  Did body mounts and got some hub caps.       
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-10-2014, 07:30 PM
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#7 |
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Senior Member
Join Date: Apr 2004
Location: sw colorado
Posts: 2,720
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Re: 78 GMC K25 "build".
that is a sweet GMC. looking forward to more!
i had an '80 K30 with that same burnt orange and white paint. love the look |
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10-10-2014, 08:30 PM
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#8 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Thanks! Me too! Its somewhat unique and i think its pretty timeless! Im dieing to get heavy onto this project! DirtyLarry on here has me dreaming of an 8.1l but logic says i'll just drop a 5.3 in like i did with the burb. We'll see. That phase is probably next winter after i get the paint and body stuff done.
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-11-2014, 01:23 PM
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#9 |
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Senior Member
 
Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: 78 GMC K25 "build".
Hey, glad to see you started a thread. Nice truck, and cool that you've gotten to use it so much already. I got to drive mine on/off the trailer - that's about it. I'll be following along on yours.
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now  )2001 GMC Sierra K2500 |
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10-21-2014, 02:17 AM
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#10 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Somehow i skipped the part where i swapped out these seats for a normal bench. The seats were ok but not what i wanted. I seem to not have a pic of the bench?
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-28-2014, 11:18 AM
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#11 |
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Windy Corner of a Dirty Street
Join Date: Jun 2003
Location: Pueblo West, Colorado
Posts: 2,926
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Re: 78 GMC K25 "build".
That’s truck is looking great! She is a clean survivor that is for sure. Surprised you didn’t like those buckets over a bench. I usually don’t like aftermarket seats but anything has to be better than the factory bench.
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Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles
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10-28-2014, 05:11 PM
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#12 |
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Registered User
Join Date: Sep 2012
Location: Midway, NC
Posts: 3,275
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Re: 78 GMC K25 "build".
Really cool truck. I love the colors on it. I'll be keeping an eye on it for sure.!
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http://67-72chevytrucks.com/vboard/s...d.php?t=581873 The low buck build threads. Check'em out! http://67-72chevytrucks.com/vboard/s...d.php?t=666022 My build thread Crossmembers CC |
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10-28-2014, 05:17 PM
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#13 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Thanks! Right now its sitting with a bed full of dirt from a recent home project. Gotta haul it off this weekend.
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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11-06-2014, 06:09 PM
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#14 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
I had pushed the "new" bed out into the side yard to clear the way for our haloween party fastivites. Between then and now the lawn got really wet and made it impossible to push the cart accross the grass. So i enlisted the help of the quad. Worked great!
 Then once it was back in my tiny garage i officially got started on the bed. Didnt get much done but this morning i got the trim off and cleaned up the side so that i can start in on the body work. 
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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11-06-2014, 07:12 PM
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#15 |
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Senior Member
Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: 78 GMC K25 "build".
Let the FUN begin!
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now )2001 GMC Sierra K2500 |
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11-06-2014, 07:26 PM
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#16 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
__________________
90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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11-06-2014, 08:17 PM
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#17 |
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Registered User
Join Date: Sep 2012
Location: Midway, NC
Posts: 3,275
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Re: 78 GMC K25 "build".
Cool.
__________________
http://67-72chevytrucks.com/vboard/s...d.php?t=581873 The low buck build threads. Check'em out! http://67-72chevytrucks.com/vboard/s...d.php?t=666022 My build thread Crossmembers CC |
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02-10-2015, 11:32 PM
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#18 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
The 78 helped move to the new house this weekend.
__________________
90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-29-2015, 12:49 PM
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#19 |
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Registered User
Join Date: Jul 2014
Location: Winston-Salem, NC
Posts: 561
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Re: 78 GMC K25 "build".
Nice score on the bed!! Hows the build coming? I love the truck and your progress.
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10-29-2015, 02:07 PM
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#20 |
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Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: 78 GMC K25 "build".
Funny you should ask, I traded it off for a crew cab. I have build going here for that too.
__________________
90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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10-29-2015, 03:05 PM
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#21 |
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Registered User
Join Date: Jul 2014
Location: Winston-Salem, NC
Posts: 561
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Re: 78 GMC K25 "build".
Yeah i've been following that, didn't know the trade happened!
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11-19-2015, 04:39 AM
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#22 |
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Registered User
Join Date: Nov 2015
Location: fort saskatchewan
Posts: 73
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Re: 78 GMC K25 "build".
Nice build I really like it.
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01-23-2016, 07:00 PM
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#23 |
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Registered User
Join Date: Aug 2011
Location: Wasilla, Alaska
Posts: 168
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Re: 78 GMC K25 "build".
Awesome!
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1971 GMC Sierra Grande 2500 2wd "Sadiee" Caddy 472/TH400 Project "Sadiee" 1969 Chevy C/10 Build "Maisie" Thread coming soon |
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02-11-2017, 06:40 PM
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#24 |
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Registered User
Join Date: Mar 2009
Location: weymouth, MA
Posts: 66
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Re: 78 GMC K25 "build".
Great looking truck!
What size are the wheels and tires on it? Love the stance and look of the original wheel/hubcaps. |
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02-14-2019, 10:41 PM
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#25 |
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Registered User
Join Date: Jun 2017
Location: USA
Posts: 220
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Re: 78 GMC K25 "build".
That's a Sweet GMC... Don't see many of those! keep that sucker Original
__________________
1979 Pontiac LeMans 231/Th350 1982 Chevrolet Silverado K10 6.2 Diesel/700r4 1984 Buick Regal Limited Sedan 4.3 V6 Diesel/200r4 (Hens teeth rare) 1991 Chevrolet Silverado K2500 5.7/700r4 1999 Chevrolet Base LS K2500 6.5TD/4L80e |
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