Hello from Arkansas.

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greene

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Feb 12, 2022
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Location
arkansas
First Name
jason
Truck Year
1986
Truck Model
c10
Engine Size
5.0
New square body owner. I just picked up a great rust free 1986 Silverado stepside. I’m going to build it with my son and make some memories.
I do need some help decoding the partial vin# stamped into the block. It’s a 3970010 cast 350.
Suffix code is TKB so pretty sure it’s a 1976 LS9
I just can’t find where to decode the partial vin# T7S512747.
Thanks for the help!!
 

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Doppleganger

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Location
OH-MI: Just like it sounds
First Name
Chris
Truck Year
1985
Truck Model
K20
Engine Size
5.7
Great looking truck! Nice find. You're going to love it here. :hat:

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ali_c20

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Location
Austria
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Alexander
Truck Year
1974, 1979
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C20, K5
Engine Size
350, 350
Welcome from Austria. Nice truck
 

Powerhouse Ranch

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PA
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Luke
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1980 & 1988
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C25 & V15
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454 & 350
Welcome from Western PA!
 

FireTruck1984

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Michigan
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Ted
Truck Year
1984 and 1984
Truck Model
High Sierra K1500 350. Sierra Classic C1500 305.
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350, 305
Welcome from the Motor City
Great looking ‘86 !
BTW both of my ‘84 GMCs are from Arkansas, Rector and Clarkridge
 

Craig 85

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Nashville, TN
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Craig
Truck Year
1985
Truck Model
K30 SRW
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454/TH-400/NP205
:welcome:
 

AyWoSch Motors

The Parts Guy
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Location
New Mexico
First Name
Ayden
Truck Year
1986
Truck Model
K1500 Sierra
Engine Size
350ci V8
Welcome from New Mexico.
 

AyWoSch Motors

The Parts Guy
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Truck Year
1986
Truck Model
K1500 Sierra
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350ci V8
I believe T7S would say that it came out of a 1977 GMC made in St Louis.
The last 6 numbers are unique to the vehical it came from.
 

WFO

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Texas Panhandle
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Dan
Truck Year
1986
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K20
Engine Size
350
Welcome from the Texas Panhandle.
 

animal

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Location
Georgia
First Name
Lee
Truck Year
1986
Truck Model
c10 silverado
Engine Size
350ish
:welcome:
 

Terry Wilkerson

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Location
Kansas
First Name
Terry
Truck Year
1986
Truck Model
GMC 1500
Engine Size
350
Welcome from from KC.
I have a 1986 GMC. It Also has the same engine number on the block. According to the what I found on the internet it goes like this.
1968 thur 1979, 350 or 327 cu.in.
145/375 hp. 2 or 4 bolt main.
Truck or hi pregormance.
I hope that helps.
That a lot of variables but it's a start.
My truck had 305 originally and changed at some point.
 

greene

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Location
arkansas
First Name
jason
Truck Year
1986
Truck Model
c10
Engine Size
5.0
Thanks everyone, I’ve already found great stuff on this site!
 

Babs

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Location
Ottawa Valley
First Name
Paul
Truck Year
1976
Truck Model
Chevrolet CUCV
Engine Size
350
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1973c10

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Oregon
First Name
Don
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1973
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C10
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454
Welcome aboard
 

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