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This Edelbrock step‑up spring assortment (#1464) supplies five pairs of carburetor springs in different vacuum ratings: 3" Hg (blue), 4" Hg (yellow), 5" Hg (orange), 7" Hg (pink) and 8" Hg (plain). The kit gives tuners a range of step‑up options to match carburetor response characteristics across various engine vacuum conditions.
Edelbrock Spring Assortment 5-Pr
