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Thread: Turbo 2005 Silverado Ignition Timing issues

  1. #11
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    Mar 2006
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    Transmission pump puked so waiting on that to be fixed.
    But found out this thing does not want much timing in boost on 89 octane. I think im going to have to get him to use 93 octane.

  2. #12
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    So was 20% enough to keep from blowing the lid off of B5913?
    1998 GMC Sierra K1500 5.7/4L80E, longtubes, 411 w/COS 5, marine cam/intake, Whipple. 91 octane at 6000'.
    1997 GMC Sierra K3500 7.4/4L80E, 411 w/COS 3, Whipple, small cam.
    2004 Corvette Z06 with longtubes.

  3. #13
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    Quote Originally Posted by Supercharged111 View Post
    So was 20% enough to keep from blowing the lid off of B5913?

    Yep. Never seen that happen in 20 years of tuning.
    Come to find out the earlier style pump was put in a later style case so it wasn't getting any lube to 4th planetary

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