Frame questions
 

I am replacing the frame on my 3/4 ton 4x4 and can only find good 2wd frames. The one I want to get is off a c20 and has a little bit surface rust at the back. How different are the frames? I can change cross members if I have to and I j ow I will need the 4x4 rad support bracket for the perches.
Thanks
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Re: Frame questions
 

The rear cab mounts are diferent as well as the motor mounts cross member.
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Re: Frame questions
 

What would need to be modified for the cab mounts? I can take off my crossmember and put it on the frame. I am going to be boxing it and adding some crossmembers to strengthen it
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Re: Frame questions
 

Anyone one know I any other differences between the frames?
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Re: Frame questions
 

C20 frame is lite duty compared to K20, see chart unless you have C6P option

Re: Frame questions
 

Thanks that's very helpful. How do I know which one I have?
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Re: Frame questions
 

Does the donor C20 have a full floating rear? If it does it Probably has the C6P option and then would have a similar frame to the K20903. C20903 is a 2wd C20 pickup, K20903 is a 4wd K20 pickup.

Re: Frame questions
 

I don't think it did. Other than thickness what would be different with the frames?
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