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Thread: Poll: is 30-34 degrees of spark advance for an hci LT1 on e85 a lot?

  1. #1

    Poll: is 30-34 degrees of spark advance for an hci LT1 on e85 a lot?

    First of its not for me.

    Ok so I came across a vblog on YouTube where a man took his hci e85 camaro to the track and chronicled his journey. In the video he talked about his experiences and shows his data log from the track.

    Anyways I noticed the data log was showing 30-34 degrees of spark advance @ wot to 7,000rpms. Seems high to me and I never seen a car keep making power to that point.

    Looking for feedback

  2. #2
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    Stay tuned for his future videos where he gets new pistons. Lol.

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    Wow that is a a lot on stock compression even with e85. Maybe he lowered the compression with his head swap? Still, seems like the wrong way to make power. Anything past 26-28 degrees is probably not picking up any power. But, do we really know what he's doing? Maybe he was trolling.
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    I?m guessing you were watching Jorge?s vlog. Yea when he was just Bolton with e85 he had 35 degrees of timing. I was cringing.

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    Senior Tuner LSxpwrdZ's Avatar
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    The MBT tuning I've done on a cam'd LT1 with cam and MSD intake with stock heads was around 26-27deg on ethanol. Beyond that it lost power/torque. It would take more potentially in lower gears accelerating faster but high gear with a eddy brake load the above was where it liked it the best. Being a customers car I left it at 26.
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    Senior Tuner SultanHassanMasTuning's Avatar
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    best is to measure on a dyno and monitor your torque.
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    Senior Tuner Ben Charles's Avatar
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    Quote Originally Posted by lsxpwrdz View Post
    the mbt tuning i've done on a cam'd lt1 with cam and msd intake with stock heads was around 26-27deg on ethanol. Beyond that it lost power/torque. It would take more potentially in lower gears accelerating faster but high gear with a eddy brake load the above was where it liked it the best. Being a customers car i left it at 26.
    this

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    Cam could be mistimed, but sometimes they like what they like. Is it trapping faster as he adds timing?