Front spring rates - S-10 Forum
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post #1 of 3 Old 02-12-2019, 06:08 PM Thread Starter
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Front spring rates

Does anyone know the actual spring rates for the factory front springs?

I have two sets available to me now, and I'm willing to make a parts run to the local yard(s) if I have to. I really want the softest front springs I can find for Richard as I'm putting him back together. I have his original springs (1997 S10 LS 4.3L V6, auto, standard cab, short bed, not sure the rate), and I have a pair of springs from a 1994 S10 base, 2.5L 4 banger, manual 5 speed, standard cab, short bed as well. It's pouring rain right now and I'm not going to go measure what I have now with the calipers. I was wondering if anyone knows for sure.

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post #2 of 3 Old 02-12-2019, 11:41 PM
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post #3 of 3 Old 02-13-2019, 08:48 AM Thread Starter
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Re: Front spring rates

Many thanks, @Mostizzle .
That chart graphic was exactly what I was looking for. I also did a little research in the RockAuto catalog. It seems the 5658 to 5664 range of numbers were all used or deemed appropriate replacements (by RockAuto) for 1st generation S10 pickups in various configurations. The 2nd gen ones were a different number series, and had a "load height" of 12 inches.

I don't mind the drop to 10.75" to 11", though. I really need to measure how far Richard's front springs have sagged, and what the actual "load height" is on his now under the exact load I have now. I also need to run him across the scales at the local truck stop and see exactly what my "load" on the front axle will be. I'll probably drop down to the 5658 springs (your chart says 579 lbs./in., but RockAuto says 530 lbs./in. at ) or maybe even something in the 5606-5610 range (420 lbs./in.)
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