Re: need some help with lowering GMC
Well, my '65 GMC has the springs over the axle. So I would think 4" blocks would raise the vehicle, but then removing 2 springs lowered it back down some
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1981 K10 (4.8 / 4L60E swap)
1982 C10 (5.3 / 4L80E swap)
1985 C20 Suburban (454 / 4L80E)
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