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Old 06-03-2017, 11:28 PM
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eschaider eschaider is offline
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Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
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In general as you decrease overlap either by increasing LSA or decreasing duration, idle vacuum will increase. Like just about everything else in an engine build it represents a compromise. The solution to the compromise will vary depending on what kind of manners you want your engine to have and where.


Ed
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