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Old 09-11-2013, 09:56 PM   #1
rs74
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K30 frame question

Is a regular cab K30 dually frame the exact same as a single wheel regular cab dually. Possibly thinking about doing away with one of my cab and chassis frames and swapping some stuff over to a pickup frame. I would need to get the wider rear axle. I just want a K30 dually pickup. Been lookin at http://www.car-part.com/ for a frame since I can't find any locally. They don't list whether it is a dual or single wheel frame though.
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Old 09-12-2013, 05:04 AM   #2
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Re: K30 frame question

I used a SRW K30 frame from a CUCV to replace the rotted frame on my 83 K30 dually. As long as they are both pickup frames and NOT Cab/Chassis frames they are the same.
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Old 09-12-2013, 07:55 AM   #3
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Re: K30 frame question

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Originally Posted by GM72K10 View Post
I used a SRW K30 frame from a CUCV to replace the rotted frame on my 83 K30 dually. As long as they are both pickup frames and NOT Cab/Chassis frames they are the same.
Thanks. That is what I thought but wanted to confirm that. Trying to find a frame may be harder than I thought. I already have one C&C K30 and would like a pickup dually K30 too. Then all I will have to do is sell the C&C frame.
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Old 09-12-2013, 07:59 AM   #4
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Re: K30 frame question

What's different about the C&C frame ....length?
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1984 K20 6.2 Diesel 4sp SM465 LB Plow truck (Parts truck for the K30 now) Not much left...
1982 K30 6.2 Diesel TH400 < Getting a CTD 47rh swap in progress Build Thread > http://67-72chevytrucks.com/vboard/s...d.php?t=588402
1984 C10 Sold to fund a Cummins swap in the K30
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Old 09-12-2013, 08:07 AM   #5
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Re: K30 frame question

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What's different about the C&C frame ....length?
Yeah mine has something like a ten foot rear frame section behind the cab. Not sure if the frame rails are different widths or not.
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85 K30 RC Dually-6.2 Diesel,400,205 on 33's
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Old 09-12-2013, 08:25 AM   #6
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Re: K30 frame question

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Yeah mine has something like a ten foot rear frame section behind the cab. Not sure if the frame rails are different widths or not.
Widths are the same, I compared with my K20 , 34 inches.

But like you said the difference is the length between the cab and rear axle.
I was wondering if they made a C&C frame that was the same length as say a dually.
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1984 K20 6.2 Diesel 4sp SM465 LB Plow truck (Parts truck for the K30 now) Not much left...
1982 K30 6.2 Diesel TH400 < Getting a CTD 47rh swap in progress Build Thread > http://67-72chevytrucks.com/vboard/s...d.php?t=588402
1984 C10 Sold to fund a Cummins swap in the K30
1995 K1500 5.7
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Old 09-12-2013, 08:31 AM   #7
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Re: K30 frame question

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Widths are the same, I compared with my K20 , 34 inches.

But like you said the difference is the length between the cab and rear axle.
I was wondering if they made a C&C frame that was the same length as say a dually.
I want to say that the closest one they make is 4 inches longer. The pickup is something like 56 inches cab to axle 131.5 inch wheelbase and C&C is 60 inches 135.5 inch wheelbase. The one I have is either 159.5 or 164.5 inch wheelbase. I could shorten the frame but then there is no frame rails after the rear spring hanger and some would have to be added I think.
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85 K30 RC Dually-6.2 Diesel,400,205 on 33's
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Old 09-12-2013, 08:44 AM   #8
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Re: K30 frame question

I have some frame rail after the rear spring hanger...

They must have made a bunch of different ones, never seen or heard of a frame that ended at the rear hangers.
Here is a pic of mine from a while back.

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1984 K20 6.2 Diesel 4sp SM465 LB Plow truck (Parts truck for the K30 now) Not much left...
1982 K30 6.2 Diesel TH400 < Getting a CTD 47rh swap in progress Build Thread > http://67-72chevytrucks.com/vboard/s...d.php?t=588402
1984 C10 Sold to fund a Cummins swap in the K30
1995 K1500 5.7
2003 Golf TDi 45mpg DD
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Old 09-12-2013, 08:51 AM   #9
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Re: K30 frame question

Someone has hacked on the frame back there before I got it. I was told it used to have a welders bed on it so who knows what they did.
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85 K30 RC Dually-6.2 Diesel,400,205 on 33's
84 K30 C&C 454,400,205 SOLD
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Old 09-12-2013, 10:45 AM   #10
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Re: K30 frame question

I went out and was looking at the frame thinking about going ahead and shortening it. It only lacks a few inches at the very rear of the frame so I think one could get by with that. However, there is not any provisions in the frame for shock mounts on the outside of the frame since C&C's mount on the inside of the frame. That and I don't know if a truck bed would set on the frame the way it needs to. It might just don't know. Anyway it was a thought. I have an email in on a frame but it is out in Massachusetts and I am in Illinois.
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85 Short Bed Silverado- Work in progress.
85 K30 RC Dually-6.2 Diesel,400,205 on 33's
84 K30 C&C 454,400,205 SOLD
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Old 09-12-2013, 02:40 PM   #11
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Re: K30 frame question

Some of the frames are cut back close to the spring hangers for the pivot point if there is a dump bed for instance. Here is a Pickup fear frame (m1008 CUCV) and my dump K30 C&C
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86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump
86 K30 CUCV M1028A1 6.2 Auto NP205
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Old 09-12-2013, 03:24 PM   #12
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Re: K30 frame question

Quote:
Originally Posted by rs74 View Post
I went out and was looking at the frame thinking about going ahead and shortening it. It only lacks a few inches at the very rear of the frame so I think one could get by with that. However, there is not any provisions in the frame for shock mounts on the outside of the frame since C&C's mount on the inside of the frame. That and I don't know if a truck bed would set on the frame the way it needs to. It might just don't know. Anyway it was a thought. I have an email in on a frame but it is out in Massachusetts and I am in Illinois.
Here's my 1990 V3500, single real wheel. Shocks mount inboard just like yours. you can see the left shock mount on the frame, forward of the axle with no shock on it. I would find someone parting a truck and get the rear tails of the frame and have them welded to your frame to make it the correct length to fit a bed. That is what I had to do to mine due to the ends of my frame being damaged by a bumper being welded on.

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Old 09-12-2013, 04:07 PM   #13
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Re: K30 frame question

Well shoot, I thought the shocks mounted on the outside of the frame for pickup frames. I was under the assumption that only the C&C trucks mounted on the inside. IF I cut the frame down I will have to cut out two feet right behind the cab in order for everything to line up.
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85 Short Bed Silverado- Work in progress.
85 K30 RC Dually-6.2 Diesel,400,205 on 33's
84 K30 C&C 454,400,205 SOLD
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Old 09-12-2013, 04:11 PM   #14
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Re: K30 frame question

Stretch the bed.
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