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Thread: Octane in 496 H0

  1. #1
    teeitup
    What octane fuel should I run in a stock 496 HO?

  2. #2
    phuggit
    I've run the lowest octane rated pump gas with no problems.

  3. #3
    fourspeednup
    Pretty sure those motors are designed to run on 87

  4. #4
    Hotcrusader76
    You should be just fine with a good qaulity pump gas. If you're skeptical you can option for a 4:1 mix of 110. I honestly believe it may be overkill so just stay with the good 91 or 92.
    Is this a stock 496HO? What are the specifics? Dynamic compression ratio?
    ~Ty

  5. #5
    teeitup
    Originally posted by Hotcrusader76
    You should be just fine with a good qaulity pump gas. If you're skeptical you can option for a 4:1 mix of 110. I honestly believe it may be overkill so just stay with the good 91 or 92.
    Is this a stock 496HO? What are the specifics? Dynamic compression ratio?
    ~Ty
    It is bone stock. I have heard of guys running anything from 87 to 91 and just wondered what is best for performance and for the motor

  6. #6
    Dave C
    I think its 9.1:1.....
    I use 87.. seems to work fine.
    but then again I used 92 octane in a 11:1 once.... I don't recommend that.

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