72 GS 350 - will be changing the 350/turbo 350 combo to 455/turbo 400...need a new engine wiring har

Discussion in 'Sparky's corner' started by Canadian GS 350, Apr 6, 2019.

  1. Canadian GS 350

    Canadian GS 350 Well-Known Member

    planning for this conversion down the road, I found the turbo 400 wires and plug under the dash. Know I need the gas pedal and switch.
    I can’t find any downshift wire in the engine compartment and assume I won’t because car is a 350.

    Should I order an engine wiring harness for a 455/turbo 400 combo? Will this then address this issue, avoid any other issues wiring up the 455 conversion? Car has air conditioning as well if that matters for harness.

    Thanks
     

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