GVW

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

molus

Member
Joined
Jul 12, 2023
Posts
46
Reaction score
97
Location
new zealand
First Name
morgan
Truck Year
1983
Truck Model
k20
Engine Size
5.7
Hey guys, putting my vehicle on the Road over here in New Zealand. It’s a 83 k20, is there any way to identify the GVW, my friends 73 has a plate like this but I can’t find anything on mine.
Cheers
 

Attachments

  • IMG_8122.jpeg
    IMG_8122.jpeg
    96.3 KB · Views: 37

legopnuematic

Licensed Junk Dealer
Supporting Member
Joined
Oct 27, 2016
Posts
2,506
Reaction score
6,482
Location
MO
First Name
Spencer
Truck Year
1971, 1̶9̶7̶4, 1976, 1979,1̶9̶8̶5, 2002
Truck Model
Dart Swinger, Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10, Ram 2500
Engine Size
225/6, 350 c.i., 350 c.i., 5.9l Cummins
The vin plates went away in 1979, when the VIN moved to the dash for the 1979 model year, just containing the VIN and continued up there until present day pretty much.

So an 83 should have this on the door-
You must be registered for see images attach
 

Keith Seymore

Full Access Member
Joined
Jul 13, 2015
Posts
2,881
Reaction score
9,144
Location
Motor City
First Name
Keith Seymore
Truck Year
1987
Truck Model
R10
Engine Size
4.3L

molus

Member
Joined
Jul 12, 2023
Posts
46
Reaction score
97
Location
new zealand
First Name
morgan
Truck Year
1983
Truck Model
k20
Engine Size
5.7
The vin plates went away in 1979, when the VIN moved to the dash for the 1979 model year, just containing the VIN and continued up there until present day pretty much.

So an 83 should have this on the door-
You must be registered for see images attach
My doors have been replaced at some stage unfortunately. There is nothing there.
 

75gmck25

Full Access Member
Joined
Oct 13, 2016
Posts
2,263
Reaction score
2,206
Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
If you look through the GM document posted, you will be able to get an idea of what you have.

Standard K20 (6000 GVW) should have 5 leaf rear springs, 3.23 ratio axle standard, and will have load range C or D tires

C6P option (8600 GVW) should have 8 leaf rear springs, usually 3 leaf front springs, 4.10 ratio axle standard, and it should have load range D or E tires (most likely E)
 

molus

Member
Joined
Jul 12, 2023
Posts
46
Reaction score
97
Location
new zealand
First Name
morgan
Truck Year
1983
Truck Model
k20
Engine Size
5.7

Attachments

  • IMG_6877.jpeg
    IMG_6877.jpeg
    236 KB · Views: 38

molus

Member
Joined
Jul 12, 2023
Posts
46
Reaction score
97
Location
new zealand
First Name
morgan
Truck Year
1983
Truck Model
k20
Engine Size
5.7
If you look through the GM document posted, you will be able to get an idea of what you have.

Standard K20 (6000 GVW) should have 5 leaf rear springs, 3.23 ratio axle standard, and will have load range C or D tires

C6P option (8600 GVW) should have 8 leaf rear springs, usually 3 leaf front springs, 4.10 ratio axle standard, and it should have load range D or E tires (most likely E)
Definitely have the C6p, the spare tyre was a 235/65/16. Larger drums and 56inch 8 leaf. 4.10 ratio.
Unfortunately I have to prove to the vehicle entry certifier in NZ what it is with some form of written identification.
 

Blue Ox

Turning Diesel Fuel Into Fun
Joined
Mar 27, 2018
Posts
5,218
Reaction score
12,014
Location
LI-NY
First Name
Derek
Truck Year
MCMLXXXV
Truck Model
K20HD
Engine Size
6.2L
You should pay the GM Heritage Center a visit and download the data books for your truck.

If you wade through that you'll be able to decipher all the VIN, SPID and other documents for your specs and options.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Definitely have the C6p, the spare tyre was a 235/65/16. Larger drums and 56inch 8 leaf. 4.10 ratio.
Unfortunately I have to prove to the vehicle entry certifier in NZ what it is with some form of written identification.
The only way to do that since everything is missing from the truck is to email the GM Heritage archive at [email protected] or fill out this form here: https://www.gm.com/content/public/us/en/gm/home/heritage/archive/archive-form.html

They will charge you $50 USD and then you will get emailed the original VIN sheet and original vehicle invoice that calls out all factory options and installed components from when it was originally produced and shipped to the first dealer or POS(point of sale). I got mine within about a week of sending in the filled out form.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
This is what they sent me when I sent in the request. Notice mine is a 1980 K25 with the 8600GVWR
 

Attachments

  • INVpg1.pdf
    147.1 KB · Views: 45
  • INVpg2.pdf
    45.8 KB · Views: 34

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Mine was just old enough that C6P didn’t exist yet and the GVW isn’t in the VIN. GM made changes after 81 though and your invoice would include the C6P RPO and they will also send you a VIN decoder that will show you have the high GVWR, which is the “G” in the 4th VIN digit.
You must be registered for see images attach
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,439
Reaction score
5,581
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Also, the "M" code engine designation in the VIN means it was the high GVWR(over 8600lbs) that was the cutoff for heavy duty emissions in the US at the time. HD emissions meant that outside California it would not have EGR, smog pump, or catalytic converters installed.
 

molus

Member
Joined
Jul 12, 2023
Posts
46
Reaction score
97
Location
new zealand
First Name
morgan
Truck Year
1983
Truck Model
k20
Engine Size
5.7
The only way to do that since everything is missing from the truck is to email the GM Heritage archive at [email protected] or fill out this form here: https://www.gm.com/content/public/us/en/gm/home/heritage/archive/archive-form.html

They will charge you $50 USD and then you will get emailed the original VIN sheet and original vehicle invoice that calls out all factory options and installed components from when it was originally produced and shipped to the first dealer or POS(point of sale). I got mine within about a week of sending in the filled out form.
I think I’ll do that. What was the options of payment. Could be a bit hard from the other side of the world.
 

75gmck25

Full Access Member
Joined
Oct 13, 2016
Posts
2,263
Reaction score
2,206
Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
Using Visa to pay is an easy way to pay for it in US$ and let your bank convert it to NZ$ for your account. I do it frequently the other way around when visiting GB (pounds) or Europe (euros).
I think Mastercard also works the same way.

In my experience, the bank conversion rate is usually a little better than what you would get if you went to one of the money exchanges in the airport.
 

Forum statistics

Threads
44,162
Posts
950,642
Members
36,275
Latest member
2manysquares2care
Top