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Thread: 720 head PSI

  1. #1
    Ride Hard! aha's Avatar
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    720 head PSI

    Hey guys, whats a good PSI to run at for 91 Octane gas for a 720 motor?


  2. #2
    dghal's Avatar
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    I have a 720 that runs 150 I run 93 octane,, I think you would not have problems with 91 octane at this pressure

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    Would 135PSI be considered low?

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    I would think less than 120 would be a concern, but as long as you are fairly even between cylinders, that is key.

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    Yeah both are right at 135.

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