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Big Cam in a TBI

Discussion in 'Chevy Truck Accessories' started by chevy_power73, Dec 1, 2009.

  1. chevy_power73

    chevy_power73 New Member

    Hello out there,

    I have a 93 silverado with a 350 that i rebuilt. I didn't do anything major in the rebuild other than a little bit of head work with stiffer springs, 30 over and a big cam. I already had an aftermarket super chip that the extreme energy 268 comp cam required. I am using the stock TBI.

    I can't be the only one out there that has put a big cam in a TBI 88-94 chevy truck.
    I can't get it to run right with the timing advance wire hooked up. I have been told that I need to trick the MAP sensor.

    Has anyone out there done this or know what they are talking about? If so what do you do?

    Thank you for any help,
    Tully ( chevy_power73)
  2. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    Have you talked with the guys at Turbo City? They do ALOT with TBI.
  3. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    I forgot to mention in my last post that I think Turbo City has adjustable MAP sensors.
  4. chevy_power73

    chevy_power73 New Member

    Turbo City....thanks I will check it out

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