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Vacuum secondaries spring
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04-17-2020, 05:01 PM
patrickt
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Or, you install an adjustable vacuum secondary housing, then you can get it just perfect with the turn of a screw.
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