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Message: <blockquote data-quote="stutaeng" data-source="post: 27943" data-attributes="member: 6175">That's probably because the torsion bar stiffness/rate is a function of the GVWR of the truck (and is a 4x4), not based on the engine size.On my 99 (2wd, so coil spring) when I did a V6 to V8 swap, I didn't even think about the "added weight sagging the front more," or anything like that. AFAIK, the coil springs are the same. There's actually not a lot of weight difference between the 4.3 and the 4.8/5.3/6.0, maybe 50 lbs-ish?</blockquote>