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nabeshin

functioning lunatic
Joined
Jan 23, 2020
Posts
464
Reaction score
859
Location
Cozad, Nebraska
First Name
Grae
Truck Year
1976
Truck Model
K10
Engine Size
400
Hello
I have a '76 K10 Bonanza with a 400 that belonged to my father-in-law. He bought it new back then. The truck served as a farm truck towing hog trailers for about a decade, then as an irrigating truck until about 15 years ago. It has basically sat still ever since.

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The history is a bit fuzzy from what he can remember. It had a new engine in '81 after the original blew, and that rebuild blew almost immediately, then a replacement was installed and that has been in there to this day. The truck is on it's third or fourth TH350 transmission. The old adage of heat kills the TH350 plays true here, towing 10,000 lbs trailers for eons was not kind to them.

I have cleaned up the truck, original paint, and changed all fluids, replaced all underhood rubber, all vacuum lines, new water pump, hoses, belts, thermostat, oil caps, valve cover grommets, pcv, and tune-up items. Also had to get the radiator rebuilt since sitting for so long corroded the innards with crud. I still need to get the Q-Jet rebuilt and get an exhaust leak fixed. It has true duals though, so it sounds great.

All this engine work has made a huge improvement in drivability overall so far.

Plans include a mechanical restoration at this point, left to do: restoring suspension bushings, shocks, brakes, steering and ball joints, etc. (steering is loose) Fixing rust and interior come later. Though I did have to recover the seat with walmart vinyl already.

Will also get a new intake and cam for more low end torque eventually. Probably address temps with auxiliary trans and oil coolers.

Also how many photos can i upload to the site? I have several detailing the process so far.
 

Shorty81

Baby Boomer
Joined
Mar 19, 2018
Posts
3,101
Reaction score
5,778
Location
North West ohio
First Name
Darren
Truck Year
86
Truck Model
K20
Engine Size
496
Welcome from the Buckeye State. Nice Bonanza!
 

RoryH19

Full Access Member
Joined
Aug 21, 2015
Posts
1,668
Reaction score
1,082
Location
Texas
First Name
Rory
Truck Year
1987
Truck Model
R10 Silverado SWB
Engine Size
350 TBI
Welcome from TX.
Nice truck.
 

WFO

Full Access Member
Joined
Jan 6, 2017
Posts
3,688
Reaction score
5,034
Location
Texas Panhandle
First Name
Dan
Truck Year
1986
Truck Model
K20
Engine Size
350
Welcome from the Texas Panhandle.
 

mcarlo86

Full Access Member
Joined
May 17, 2019
Posts
567
Reaction score
1,045
Location
ND
First Name
Brian
Truck Year
1990
Truck Model
Suburban
Engine Size
350
Nice truck! My uncle in SD hauled hogs for many years with a '78 K15 GMC similar to your pickup. I think he put well over 200K on it before the body finally rotted out and he retired it. You may want to start a project page for your pickup and post as many pics as you can. We all like to see pics and appreciate following your progress. Welcome to the best square body forum. Great people here and lots of great info!
 

Old77

Administrator
Staff member
Admin
Joined
Aug 19, 2010
Posts
28,454
Reaction score
9,426
Location
Kansas City, Mo
First Name
Jacob
Truck Year
1977/1990/1991
Truck Model
C10 longbed/R1500 Burb/R3500 Dually
Engine Size
350/350/454
:welcome:
 

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,751
Reaction score
18,193
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350 w/203
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animal

Super Moderator
Staff member
Super Moderator
Joined
Jul 30, 2010
Posts
5,603
Reaction score
3,848
Location
Georgia
First Name
Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

1973c10

Full Access Member
Joined
Sep 25, 2015
Posts
6,376
Reaction score
24,019
Location
Oregon
First Name
Don
Truck Year
1973
Truck Model
C10
Engine Size
454
Welcome from Oregon
 

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