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1989 Firebird 305 TBI swap - installing 1991 350 TPI from Z28

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  • 1989 Firebird 305 TBI swap - installing 1991 350 TPI from Z28

    We're in the process of swapping a 350 TPI from a 1991 Z28 into a 1989 Formula Firebird that had a 305 TBI.

    We have the entire motor harness and computer. Comparing the accessory wiring on the motor harnesses, we're noticing some big differences. I know that the 'Bird has the battery and charcoal can reversed for the 350. But we're also seeing some bigger problems - the brake emergency light is on the accessory harness on the driver's side of the 'bird, but there's also one on the Z28 motor harness. Also, we're not seeing the wiper and washer plugs on the new harness (on the motor harness of the 'Bird) The list could probably go on and on.

    Is the problem with the harness due to the different years, going from a 'Bird to Z28, or both?

    Spent all day pulling the 305 and I really need to get this project out of my shop this weekend!!! Any First Hand knowledge would be greatly appreciated!
    Life's too short to drive a ricer.
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  • #2
    You need to go to TGO, thirdgen.org much more info and alot more people can chime in with first hand info.

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    • #3
      I've posted there, too. Just covering all my bases.
      Life's too short to drive a ricer.
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