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Thread: Timing

  1. #1
    Jr. Engineer
    Join Date
    Feb 2007
    Edmonton, Alberta, Canada

    Default Timing


    this is making me feel stupid to have to post this, but does anyone know the stock timing from factory for a 1993, k1500 burb, with a 350 TBI?



    1993 K1500 Suburban 350TBI, 378,486KMS on frame, 49,000KMS on Drivetrain. Lots of mods, built for haulin trailers and haulin @$$ :)

    2000 K2500 Yukon XL 6.0L Vortec 252000KMS custom CAI, and exhaust...but not done yet.

    "If you are dumb enough to do something you don't know how to do, and can't do it safely then WHEN you get hurt its your own fault...BONEHEAD"

  2. #2


    Is there an Emissions sticker under the hood? If so it should be on there.....

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  3. #3
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    I have a 93 and this is what I do:

    For non-HEI (HEI identified by coil in the dist. cap) unplug the tan/black wire located under the cover on the firewall passenger side and set the timing to zero unless your decal says otherwise.

    If you do not disconnect the tan/black wire you will not be able to set the timing.

    Or you can try this from the AutoZone website: (Not much help if your decal is missing)

    Distributor Ignition (DI) Systems

    Refer to the underhood label for the proper timing setting.

    1. Engage the parking brake, block the wheels and set the transmission in P.
    2. Disconnect the Ignition Control (IC) system by disengaging the "set timing connector". This is a single wire sealed connector that has a tan with black stripe lead. This wire comes out of the wiring harness below the heater case.
    3. With the ignition switch OFF , connect the timing light pickup lead to the No. 1 spark plug wire.
    4. Start the engine and point the timing light at the timing mark on the balancer or pulley and check the timing.
    5. If the timing is not within specifications refer to the underhood emission sticker, loosen the distributor hold-down bolt. Slowly rotate the distributor until the proper timing setting is achieved.
    6. Tighten the hold-down bolt and recheck the timing.
    7. Turn the ignition OFF , remove the timing light and engage the "set timing" connector.
    Last edited by unplugged; 06-29-2009 at 07:12 PM. Reason: sic
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
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  4. #4
    Jr. Engineer
    Join Date
    Feb 2007
    Edmonton, Alberta, Canada


    thanks unplugged, ill giver a try.

  5. #5


    would this also work on a 1990 Chevy 1500 w/ a 4.3L?

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