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07-23-2011, 11:50 PM
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#1 |
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Registered User
 
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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1T GVW and 3/4T GVW?
I have a '73 C30 std cab single rear wheel 1ton the GVW is 8200lbs, I also have a '77 C20 std cab and the GVW is the same as the 1t....8200lbs??????? Why is that? I thought the 1t would have a higher GVW...?
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------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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07-24-2011, 12:00 AM
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#2 |
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Registered User
Join Date: Nov 2009
Location: Bend, Oregon
Posts: 43
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Re: 1T GVW and 3/4T GVW?
I don't have an 'official' answer (and this is as much opinion as anything, sure more will chime in...), but I've learned there are many factors in determining the gvw on our trucks. The axles are one factor, all having thier own weight ratings. Springs also are a factor (number of leafs, size of leafs, different coil springs for 2wd's, etc). I think even brakes sizes have a bit of a factor. Thats my thoughts. I've ran into simular setup, where my '87 V-10 had a 6400 lb. gvw vs. the '85 GMC K2500 parts truck I bought for a 3/4 ton axle swap with a 6600 lb. gvw.
Last edited by timpage; 07-24-2011 at 12:01 AM. Reason: added stuff |
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07-24-2011, 10:21 AM
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#3 |
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Registered User
Join Date: Nov 2010
Location: canada
Posts: 43
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Re: 1T GVW and 3/4T GVW?
It's a mystery. I have 9 leaf springs per side on my 76 C25 and heavy duty front coils (and axles to match) but still only a gvw of 6400... I think a lot of it depends on whether or not the original owner paid for a higher gvw option, like a Camper Special.
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07-24-2011, 10:40 AM
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#4 |
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Registered User
Join Date: Dec 2010
Location: Pittsburgh, PA
Posts: 1,009
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Re: 1T GVW and 3/4T GVW?
My '83 K20 had 9 leaf springs plus an overload in the rear, and the standard springs up front. My GVW was 8,600 lbs.
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Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400 
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07-24-2011, 11:37 AM
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#5 |
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Registered User
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: 1T GVW and 3/4T GVW?
Now my '77 is a Silveado Camper Special and the '73 is a no frills Custom 30
__________________
------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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07-24-2011, 12:23 PM
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#6 | |
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Registered User
Join Date: Nov 2010
Location: canada
Posts: 43
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Re: 1T GVW and 3/4T GVW?
Quote:
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07-24-2011, 12:52 PM
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#7 |
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Registered User
Join Date: May 2010
Location: Lewis County, WA
Posts: 1,523
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Re: 1T GVW and 3/4T GVW?
GVW is a pretty arbitrary number...
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07-24-2011, 04:30 PM
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#8 | |
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Registered User
Join Date: Nov 2009
Location: Bend, Oregon
Posts: 43
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Re: 1T GVW and 3/4T GVW?
Quote:
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07-24-2011, 08:06 PM
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#9 |
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Registered User
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: 1T GVW and 3/4T GVW?
I was just shocked to see my 3/4t was the same as a 1t.
__________________
------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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07-27-2011, 01:58 AM
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#10 |
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Registered User
Join Date: Jan 2011
Location: Denver, CO
Posts: 37
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Re: 1T GVW and 3/4T GVW?
Your GVW is affected by brakes and tires. Both your trucks run the same brakes I bet, unless one is a hydroboost. TRUE one ton trucks used hydroboost and dual rear wheels. The duals will greatly increase your GVW as per the sidewall ratings. Hope this helps.
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