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Old 07-02-2007, 12:33 PM   #1
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2wd to 4wd 70 Chevy C30 frame

Ok, I've done a fair bit of research.

I have access to two 4wd frames:

One is a 72 K20... the other is a 91 K5.

Are the front spring hangers any different between the two?

I plan to use a set of 4wd hangers on the C30 chassis: the question is, which ones? 91 K5 or 72 K20?

Last edited by FormerMember; 07-02-2007 at 05:28 PM.
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Old 07-02-2007, 01:17 PM   #2
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Re: 2wd to 4wd 70 Chevy C30 frame

The K5 is IFS isn't it? If so, then I would say the lack of front hangers would be a bit different than the '72.
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Old 07-02-2007, 01:18 PM   #3
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Re: 2wd to 4wd 70 Chevy C30 frame

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The K5 is IFS isn't it? If so, then I would say the lack of front hangers would be a bit different than the '72.
K5 stayed solid front until 91.

The K5 is a leaf sprung suspension front and rear.
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Old 07-02-2007, 05:21 PM   #4
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Re: 2wd to 4wd 70 Chevy C30 frame

The '91 probably has wider springs than the '71, otherwise the front hangers will be very similar. The '91 also uses longer front springs so the rear hanger and shackle on the front spring will be farther back than on the '71.
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Old 07-03-2007, 08:13 AM   #5
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Re: 2wd to 4wd 70 Chevy C30 frame

Did you go get the C30 frame yet ????
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Old 07-03-2007, 08:58 AM   #6
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Re: 2wd to 4wd 70 Chevy C30 frame

Heh, nope
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Old 07-04-2007, 01:33 PM   #7
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Re: 2wd to 4wd 70 Chevy C30 frame

I decided to go with one of these:


This allows me to run a longer spring that will provide a better ride with 4" of lift.
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Old 07-04-2007, 03:09 PM   #8
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Re: 2wd to 4wd 70 Chevy C30 frame

Cool! where did you get that? What is it called, make mod.
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Old 07-04-2007, 04:59 PM   #9
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Re: 2wd to 4wd 70 Chevy C30 frame

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Originally Posted by eedgell View Post
Cool! where did you get that? What is it called, make mod.
http://diy4x.com/suspension.htm

FGB52 = First Gen Beyond 52's

It's easier than doing it myself or converting K20 brackets to fit the 1 ton frame.

a 52" spring's going to be a better way to go on this rig.

Quote:
Originally Posted by Blazer1970 View Post
The '91 probably has wider springs than the '71, otherwise the front hangers will be very similar. The '91 also uses longer front springs so the rear hanger and shackle on the front spring will be farther back than on the '71.
Where this is a 72, is has the same width springs. Been doing the comparison...

71 and earlier springs are a half inch narrower, that I can tell?

Last edited by FormerMember; 07-04-2007 at 05:00 PM.
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Old 07-05-2007, 09:49 AM   #10
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Re: 2wd to 4wd 70 Chevy C30 frame

That's an impressive spring hanger!
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Old 07-05-2007, 10:01 AM   #11
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Re: 2wd to 4wd 70 Chevy C30 frame

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