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Old 03-15-2017, 07:11 PM   #7
northerngmc
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Join Date: Jan 2004
Location: Whitehorse YK Canada
Posts: 2,651
Re: 69 c20 lowering questions

Quote:
Originally Posted by Adam4pt6 View Post
Just checked them out. What's the difference between c10 and c20 Springs? I was under the impression I could just run Springs marketed for the c10, is that incorrect?
I used C10 springs in my C20 when I lowered it. Worked well. 2" front, 4" rear. Left it with stock drum brakes.

Biggest problem I had was most threads said to simply pop the lower ball joint open and swing the brakes out of the way to swap the front springs. Popping the ball joint took some work and then the brake backing plate would not clear the suspension and come out. So I ended up unbolting the lower control arm from the frame.

Pics for reference on 2" front and 4" rear C10 Springs.

Before.....



After....



I did take measurements on the top of the fender lip to the garage floor before and after and it was close to 2"/4" on the tape.
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59 GMC 9314 a.k.a. Whoopee
68 C20 50th Anniversary a.k.a. The Rat

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