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#1 |
Registered User
Join Date: Feb 2015
Location: Albion, Mich
Posts: 20
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Frame rails
Don't have time to look for it but was wondering if 2wd 1/2 ton frame rails are the same as 4wd 3/4 ton for the 80's model.
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#2 |
Registered User
Join Date: Jul 2012
Location: MA
Posts: 207
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Re: Frame rails
I don't think so.
There was a great post with a GM frame chart here, but I can't find it. Anyway it related GVWR and series with bending moment. There was a lot of factors, but mostly relating to section modulus, and for those series (as dimensions are basically the same for long bed rails) the thickness of the steel was the difference. There was some crossover, but very little. IE- its possible that a heavy 1/2 frame rail would be the same as a light duty 3/4 rail, but it would need to be referenced by serial number.
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2012 Chevy 2500HD, 6.0L, 6spd auto, 4x4, ECSB 1987 GMC V3500 Dump, 6.2L diesel, TH400 1983 GMC K2500 - awaiting its restoration and Cummins swap. |
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#3 | |
Registered User
Join Date: Mar 2014
Location: Tulsa, OK
Posts: 281
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Re: Frame rails
Quote:
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84' C-10 Custom Deluxe 97' & 98' C-1500 Silverados |
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#4 |
Registered User
Join Date: Jan 2009
Location: Louisville,Ky
Posts: 5,811
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Re: Frame rails
The look a like but not sure on the frame thickness if that matter or not.Why do you ask?Is your frame rotted out or trying to do a 4x4 swap by swapping the bodies?
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#5 |
Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,479
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Re: Frame rails
Thickness is different
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86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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#6 |
Registered User
Join Date: Feb 2015
Location: Albion, Mich
Posts: 20
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Re: Frame rails
Actually I have a 86 roller that I am using the suspension and rear-end in my 64 and a kid at work has a 3/4 ton 4x4 that has a cracked frame
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#7 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: Frame rails
Quote:
Big 10/Heavy Half use the 1/2 ton frame but get heavier duty springs/leaf spring packs. K
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