Olds 455 Fuel Pressure
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Olds 455 Fuel Pressure

  1. #1
    Idaho Jet Craig4937's Avatar
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    Default Olds 455 Fuel Pressure

    Just a quick question, I'm setting my fuel Regulator. At what psi do I run my Olds 455....

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  3. #2
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    Default Ballpark numbers

    IMO, for carburetor applications, 4 PSI would be an accepted minimum, and 7 PSI would be considered a Maximum. The real test is where the pressure remains through out the RPM curve. If you can maintain a constant 5 PSI at WOT for a minute, you should be fine.... You DO have a pressure gauge you can see from the driver's seat, right?... Another thing to remember, pressure is NOT volume. It is possible to have plenty of pressure and still starve the engine..... If the engine seems to "nose over" at top speed, you may still have a delivery problem even though the pressure seems OK....
    Ray
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  4. #3
    Idaho Jet Craig4937's Avatar
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    Default Fuel PSI

    Thanks, Ray for that! I'll test it and reply.....

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