The factory S10 upper and lower control arms are very similar to the G-Body arms which had poor geometry for performance concerns from the factory. The arms add positive camber (tilting the top of the tire out) under compression instead of negative camber.
Most aftermarket upper and lower arms correct this as well as reposition the upper and lower ball joint to aid in being able to dial in more caster as well.
Will soft springs and a big bar work with the factory arms, probably yes...will it improve the handling of the S10, probably not just by themselves.
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Lance
1985 Monte Carlo SS Street Car
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