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Compression

This is a discussion on Compression within the General Help forums, part of the LSx Technical Help Section category; Whats the compression limit before needing to run a higher octane (higher than 93)??...

  1. #1
    Junior Member bird2000's Avatar
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    pewter
    2000 Firebird

    Compression

    Whats the compression limit before needing to run a higher octane (higher than 93)??

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    Mystic Teal
    01 Z28

    It's not just compression, it's also tuning. I was at 11:1. I had street tune that I could run 93 octane and I had a second PCM with a race tune that required 100 octane ...

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    Junior Member bird2000's Avatar
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    pewter
    2000 Firebird

    So its possible to have high compression and still run 93 octane with the right tuning? If the car were tuned for the 93 oct would the be substantial benefits if any by running 100 oct??

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    Senior Member ninobrn99's Avatar
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    Pewter
    all bore 370 Trans Am

    ive seen 11.7-8 on 92 octane...although it didnt have as much timing.

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    Mystic Teal
    01 Z28

    Quote Originally Posted by bird2000 View Post
    So its possible to have high compression and still run 93 octane with the right tuning? If the car were tuned for the 93 oct would the be substantial benefits if any by running 100 oct??
    The difference between my two tunes was 20 rwhp 403 vs 383 ...

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