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Power Strokes
6.4 Aftermarket
F450 suspension ?
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[QUOTE="footlong70, post: 1418428, member: 8456"] Correct the 450 frame is different, "Heavier" but minimally. The frame weight difference is less than 500 pounds. But call it a 500 pounds heavier for argument sake, cut that in half because the front springs are holding half of it, so 250 pounds additional on the front, divided between two springs is only 125lb extra per spring which is peanuts on a <8000lb(sprung weight) truck. The 450 stock springs have a higher spring rate for the payload(which you say is not required anymore), not so much the truck curb weight difference. BTW 2016 models but same idea, as the frames ect are nearly identical Curb weight of F-350 CCLB SRW Diesel 7734lb Curb Weight of F-450 CCLB DRW Diesel 8589lb A grand total of 855lb, subtract additional unsprung weight in axles, tires, rims, then divide by 2 as the front is only holding half the load. You really are talking peanuts... You can use whatever spring the 350 srw are using with very similar expectations. [/QUOTE]
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