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90 gmc timing spec

Discussion in 'Chevy Trucks' started by 66Construction, Jul 20, 2001.

  1. 66Construction

    66Construction Senior Member
    Messages: 315

    I need some help! I have a 90 gmc 2500 with a 5.7 v8 7200 gvw. The Label on the fan shroud is missing the part with the timing spec on it. All it says it BTC and then the rest of the label is missing. The timing got screwed up while working on the truck and now I don't know what to set it to. If anyone has the same truck or knows the spec I would be grateful if you would share the information with me. John...Dino... are you out there???
    Thanks a million in advance!
  2. Rooster

    Rooster Member
    from Kansas
    Messages: 650

    Call your local auto parts store, they should have the information you need.
  3. AtlasFBG2

    AtlasFBG2 Member
    from Ohio
    Messages: 62

    According to the shop manual i have it just says top dead center.I have a 90 2500 hd with the 350 ill look under the hood tomarrow to make sure.
  4. 66Construction

    66Construction Senior Member
    Messages: 315

    Thank you!

    Top dead center with the computer bypassed did the trick!:)