Howdy all

jphelzer

Junior Member
Joined
Jun 9, 2021
Posts
6
Reaction score
14
Location
Santa Rosa, CA
First Name
John
Truck Year
1977
Truck Model
K25
Engine Size
400
Hello,

I am now the proud owner of a square body! Here's what I got:

1977 GMC K25
400 V* with AT
Sierra Classic trim

It's pretty original, except for a front winch and bumper. It was stored for a long time so the exterior is a bit rough. But I got a great deal on it.

I am having a fuel issue with it, so I'm going to search the forums and post if I can't find my problem discuissed before. I look forward to learning a lot. I've wanted a SB for many years, and the right one finally came along.

John

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Jawzjeep

Honk if parts fall off
Joined
Jun 5, 2021
Posts
244
Reaction score
327
Location
Washington
First Name
Joshua
Truck Year
1991
Truck Model
Suburban
Engine Size
350
Welcome! If it's been sitting at all just get the gas out of the tank and clean, even the lines. So many problems with old gas its hard to fix other issues till then. Pretty much chasing your tail.
 

Babs

Full Access Member
Joined
May 10, 2020
Posts
1,329
Reaction score
5,178
Location
Ottawa Valley
First Name
Paul
Truck Year
1976
Truck Model
Chevrolet CUCV
Engine Size
350
:welcome:nice looking solid truck !
 

RedBeard_83

Full Access Member
Joined
Mar 16, 2020
Posts
554
Reaction score
852
Location
Florida
First Name
Cory
Truck Year
1986
Truck Model
Custom deluxe
Engine Size
Sbc 350
Welcome from Florida
 

animal

Super Moderator
Staff member
Super Moderator
Joined
Jul 30, 2010
Posts
4,813
Reaction score
2,374
Location
Georgia
First Name
Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

Shorty81

Baby Boomer
Joined
Mar 19, 2018
Posts
2,118
Reaction score
3,252
Location
North West ohio
First Name
Darren
Truck Year
86
Truck Model
K20
Engine Size
496
Welcome from the Buckeye State. Nice looking truck.
 

Goldie Driver

Full Access Member
Joined
Mar 19, 2018
Posts
3,719
Reaction score
5,702
Location
Houston, Texas
First Name
Britt
Truck Year
1980
Truck Model
GMC K1500 Suburban
Engine Size
350
Welcome from Houston!

Nice beast.

:)
 

86 SCOTTSDALE

Full Access Member
Joined
Apr 10, 2019
Posts
355
Reaction score
266
Location
Oakham MA
First Name
Armand
Truck Year
1986
Truck Model
K10
Engine Size
305
Welcome from Mass.
 

1973c10

Full Access Member
Joined
Sep 25, 2015
Posts
6,373
Reaction score
23,025
Location
Oregon
First Name
Don
Truck Year
1973
Truck Model
C10
Engine Size
454
Welcome :boti:
 

WFO

Full Access Member
Joined
Jan 6, 2017
Posts
2,621
Reaction score
2,782
Location
Texas Panhandle
First Name
Dan
Truck Year
1986
Truck Model
K20
Engine Size
350
Welcome from the Texas Panhandle.
 

ali_c20

Full Access Member
Joined
Sep 20, 2016
Posts
641
Reaction score
741
Location
Austria
First Name
Alexander
Truck Year
1974, 1979
Truck Model
C20, K5
Engine Size
350, 350
Welcome from Austria.
 

Craig 85

Full Access Member
Joined
Jan 25, 2017
Posts
3,643
Reaction score
3,466
Location
Nashville, TN
First Name
Craig
Truck Year
1985
Truck Model
K30 SRW
Engine Size
454/TH-400/NP205
Welcome. Nice rig. If it's been sitting with our crappy California fuel, the rubber on the accelerator pump has probably gone soft.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
3,253
Reaction score
3,240
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Very nice looking truck! Very similar to mine. I would suggest if it has sat for a long time, you should just service the entire fuel system. Drop the tanks and inspect the sending units, they might need replacement. Replace all the rubber lines, fuel pump, and rebuild the carb. You can do all of that for about $100-150 and it likely needs it anyways. I would also make sure you change ALL of the fluids and filters including engine/trans/transfer/diffs. Mine had sat for 13 years and everything was separated and garbage. If yours sat for anything like that, you'll likely have all your seals start blowing out and leaks popping up everywhere when you start driving it.
 

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