Thread: Weber velocity stack length
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Old 08-07-2011, 07:20 PM
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Join Date: Jul 2000
Location: Shreveport, LA
Cobra Make, Engine: CSX4083, NOS 427 SOHC, serial number 589. Dyno'd in 1967 at 629HP with single 4v 560 Holley. Now with 4 Webers.
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As I recall, more than 20 degrees, I think in the 26 degree range. I'm sure you've done this but any chance fuel pressure is higher than the suggested 2-3PSI for Webers or that the floats are set too high? High pressure fuel pump?
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