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Old 05-19-2020, 12:21 PM   #7
weim55
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Join Date: Jan 2017
Location: Larkspur, Colorado
Posts: 904
Re: 69 C20 drums to discs from 74 C30-Is this doable?

Quote:
Originally Posted by RichardJ View Post
I missed the DRW in the first post and assumed he is talking about a C30 SRW (single rear wheel).

I used a '76 C30 SRW as a donor for my '67 C20 (GMC 2500 actually).
I disassembled both and selected individual parts. The C30 had a bigger sway bar. The C30 big block springs were too big for my C20 6cyl. I used all the brake lines, locating the combination valve under the radiator. Where the brake lines go through the frame, there is already a hole, but needs enlarged.
The bolt holes for the crossmember to the frame are mostly the same. One hole on each side needs drilled and one hole needs slightly elongated.

Assuming you used all of the suspension components from the C 30, Was there any change to the overall track width from the old suspension on the 67?

Steve weim55 Colorado
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