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Re: 1990 GMC Suburban ... Cummins Powered
12 leaf springs in the front? Why? I have done 3 square body chevys, one with 3 leaf stock springs, one with 4" lift springs, and one with 6" lift springs. Non have had any problems with weight and the stock spring'd truck has a 8.5 boss v-blade. They all ride decent for what they are. The stock spring'd truck rides really nice. The only one I used a body lift on was an 84 K20 because I used a ZF5 5 speed. As far as the rivets ratteling out, I haven't seen that problem. The frame flexing, yeah, they do that with big blocks.  Anyhow, keep up the good work.
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Ryan
1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread
1972 GMC Sierra Grande Longhorn 4x4
1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed
1972 C10 Suburban Custom Deluxe
1969 Chevy milk truck
1971 Camaro RS 5.3 BTR STG3 Cam Super T10
1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project
Tired of spark plugs? Check this out.
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