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#1 |
Senior Member
![]() Join Date: Jun 2010
Location: Illinois
Posts: 2,957
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How much difference between 3/4 and 1 ton frames
I am thinking about building a one ton dually 4x4. Naturally I am thinking of looking for a 3/4 ton 4x4 frame since it would be the easiest to do. I think. But on the other hand would the C30 frames be built stronger. I have a title less 84 K30 that I am going to take out the Dana and the 14 bolt rear use. The 80's model one ton frames are a couple inches taller I think over the 3/4 ton frames.
If I were to use a 3/4 ton frame would I really lose that much in hauling capacity. |
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#2 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: How much difference between 3/4 and 1 ton frames
The later frame is not a direct swap. Most people doing a K30 convert the existing frame. As to the frames this will probably help.
C Blazer C10 115 C10 127 6.04" height 2.53" flange width 0.156" thick 2.98 section modulus C20 127 6.11" height 2.46" flange width 0.194" thick 3.71 section modulus C20/30 133 (Longhorns) 7.20" height 2.77" flange width 0.194" thick 5.05 section modulus C30 157 8.18" height 2.97" flange width 0.224" thick 7.29 section modulus K Blazer K10 115 6.02" height 2.71" flange width 0.141" thick 2.70 section modulus K10 127 K20 127 6.09" height 2.75" flange width 0.186" thick 3.48 section modulus
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#3 |
Senior Member
![]() Join Date: Jun 2010
Location: Illinois
Posts: 2,957
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Re: How much difference between 3/4 and 1 ton frames
Yeah i was just thinking of using the 67-72 frame and the 84 front and rear axle/suspensions. Just not sure which way to go towards yet. Either go with the 4x4 or convert a C30. I don't plan on using it everyday for heavy hauling but if I wanted to haul a load of rock or something I would want to make sure the 3/4 ton frame could handle it if that is the route I chose.
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#4 |
Registered User
![]() Join Date: Feb 2009
Location: Surprise, AZ
Posts: 490
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Re: How much difference between 3/4 and 1 ton frames
I guess a lot of it is what do you want to do on the back-end of the truck? The -30 is substantially longer than any of the K series trucks, so there's not a matching bed that you can just drop on it.
Not to say it couldn't be done... lots of guys have turned a long bed into a short bed... but I've never seen anyone lengthen a longhorn bed into a, ummm.... ultra-long-long bed? Looks like you'll need an extension.... Unless, of course, you decide to cut the frame...
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-Scott 1972 Chevy K20 Picture Gallery Build Thread 1930 Chevy AD Picture Gallery 1929 Ford Model-A Picture Gallery 1975 Triumph TR-6 Picture Gallery |
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#5 |
Senior Member
![]() Join Date: Jun 2010
Location: Illinois
Posts: 2,957
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Re: How much difference between 3/4 and 1 ton frames
I was thinking more along the lines of a flatbed whether it is on a 3/4 ton frame or a one ton. I don't plan on using it full time. I am getting rid of my 03 2500HD 4x4 crew and I just need a good ol heavy truck to do my hauling with. I also want something different and there don't seem to be to many people that have a 4x4 dually in the years between 60-72.
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