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Old 05-16-2013, 06:02 AM
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holley blue pump with dual Edelbrock carbs

Im putting together a blown 331 early hemi engine and have some questions. I bought the Holley blue fuel pump with the 12-803 regulator. I have two Edelbrock 1405 carbs. Do I have to use two regulators to feed the two carbs or can I use the two out ports on the regulator and feed both of the carbs with just one regulator? Where would be the best place to put a fuel pressure gauge?

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Old 05-16-2013, 06:16 AM
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I'm no expert , but I've been feeding 2 - 450 holley's on a tunnel-ram 383 w/1 reg. for a number of years w/out problems .
dave
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Old 05-16-2013, 01:19 PM
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One regulator is fine. Put the guage after the regulator - easy to see. It would help much if you can see it when driving the car - make sure the fuel pressure stays put. You can get a fitting that will go onto the carb and have a port for the guage, and hook your fuel feed line to the fitting.
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Old 05-18-2013, 12:13 AM
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Which way would be est,Either to use both of the exits on the regulator to each carb and have a t adapter on one of the lines for the gas prassure gauge or block off the one exit on the regulator and use Edelbrocks 8088 that deliveres to both carbs and has a built in gauge exit?
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Old 05-18-2013, 08:29 AM
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I prefer using both sides of the reg. w/ a gauge adapter , just think it looks "right" , probably doesn't make a lot of difference performance - wise..dave
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