mosty afc spring rates to bring in the fueling curve and some use plates, others chuck them. and govener spring weigh in pretty heavy in the mix. the 24v's seem to like a lot of timing from a p pump on them.
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98 3500 4x4 quad 12v 5 speed,98 quad 4x4 12v stock sold, and a 95 reg cab getting triples.97 dually 4x4,6 speed over 500 rwhp, sold, 98 3/4 ton short bed reg cab, over 500 rwhp, sold. 98 quad 5 speed sold and the wife has a little dmax.
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