The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-17-2016, 02:01 PM   #1
manimal
Registered User
 
manimal's Avatar
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
2 gvw's on same truck?

I am have a 73 C20 and the gvw(s) are very cornfusing to me???
Anyone able to esplain this? Thanks
Attached Images
 
__________________
------------------------------------------------------
-Lance
2000 Chevy C2500, 5.7, 4L80e
1999 Suburban K2500, 7.4, 4L80e
1980 Camaro..son's car...PROJECT
manimal is offline   Reply With Quote
Old 05-18-2016, 10:32 AM   #2
manimal
Registered User
 
manimal's Avatar
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
Re: 2 gvw's on same truck?

No one?
__________________
------------------------------------------------------
-Lance
2000 Chevy C2500, 5.7, 4L80e
1999 Suburban K2500, 7.4, 4L80e
1980 Camaro..son's car...PROJECT
manimal is offline   Reply With Quote
Old 05-18-2016, 12:54 PM   #3
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: 2 gvw's on same truck?

"As manufactured" is the way your specific truck was equipped with it's own option content.

"Maximum" is the most you could get with any combination of available tire and suspension components.

For example, maybe the person who ordered your truck chose RPO C6C such that the GVW was limited to 7500lbs, based on whatever the weak link is (tire load range, rear springs, front springs, front axle, rear axle or frame).

If a person wanted they could have ordered RPO C6N, which would be the maximum anybody could have for that particular model (at 8200lb GVW).

K
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Old 05-18-2016, 01:12 PM   #4
1976gmc20
Registered User
 
Join Date: May 2015
Location: Montana
Posts: 3,696
Re: 2 gvw's on same truck?

My 73 K20 had the same plate.

It came with 8 ply tires, hence the 7500 limit "as manufactured" but if you switched to 10 ply tires then it could carry 8200 with no other modification.

Those were tough trucks. I sometimes well exceeded GVW with no problems other than blown tires.

I just wish that I had ordered it with manual four speed - then I might even still have it today
__________________
Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
1976gmc20 is offline   Reply With Quote
Old 05-18-2016, 01:56 PM   #5
manimal
Registered User
 
manimal's Avatar
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
Re: 2 gvw's on same truck?

Thanks guys! here is the SPID...were there 2 different frames for 73?
Attached Images
 
__________________
------------------------------------------------------
-Lance
2000 Chevy C2500, 5.7, 4L80e
1999 Suburban K2500, 7.4, 4L80e
1980 Camaro..son's car...PROJECT
manimal is offline   Reply With Quote
Old 05-18-2016, 03:50 PM   #6
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 9,226
Re: 2 gvw's on same truck?

Quote:
Originally Posted by manimal View Post
Thanks guys! here is the SPID...were there 2 different frames for 73?
No (why do you ask?). The changes were made via selectable components (tires, springs, etc).

Back then a 1/2 ton was a 1/2 ton* and a 3/4 ton was a 3/4 ton.; There weren't LD and HD 3/4 tons like there are today.

K

*well, except for the "Heavy Half"...
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Old 05-18-2016, 04:26 PM   #7
1976gmc20
Registered User
 
Join Date: May 2015
Location: Montana
Posts: 3,696
Re: 2 gvw's on same truck?

Quote:
Originally Posted by manimal View Post
Thanks guys! here is the SPID...were there 2 different frames for 73?
That ain't right ... the K20 wasn't available with 454 in 1973.

I think VIN should be "CK..." not "CC..."
__________________
Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
1976gmc20 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:35 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com