350 Timing

Discussion in 'GM Powertrain' started by 1991 K2500, Aug 8, 2009.

  1. 1991 K2500

    1991 K2500 New Member

    I may sound like an idiot, but what are the steps to setting the timing for a 1991 GMC K2500 with a 350 TBI. I know the concept of a timing light but I would like to get all the steps, start to finish. Thanks
  2. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Get yourself a Chilton or Haynes. It details the procedure, and you will be using it all the time with an older truck.
  3. 77chevy

    77chevy Member

    Go with Chilton

    I'd opt for the Chilton They are put together with the novice in mind. They have more info than a haynes.
    Good Luck!
  4. Crawdaddy

    Crawdaddy All hail the Mad King!! Staff Member 5+ Years 1000 Posts Platinum Contributor

    Ditto on the manual. The one trick that I can think of is that the 350TBI has electronicaly controlled timing advance. On the drivers side of the engine compartment should be a single-wire connector, tan wire I think, that has to be disconnected while timing it to make sure the computer isn't messing with the advance while you're trying to time it.

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