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Thread: LS1 Swap in 98 OBS

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  1. #1
    Join Date
    Dec 2011
    Location
    Savannah, ga
    Posts
    315
    i think your cruise needs the 4k VSS signal i could be wrong though.
    speedo and tach are from wires on the pcm not sure which ones though. your tune will need to be changed for the tach to work right as well
    1997 RCSB, AES 390 + 4L80E transplant, F1A Procharger, #160 injectors, Magnafuel 750, Schoenfield Longtubes, 3" flowmasters, Steve Morris Bullit cam, Circle D 3k stall, Ford 9" rear, Homemade Caltrac bars.


  2. #2
    reverse light are ran through the Neutral safety switch which is also tied into the fuel pump wire. speedo should be either B5 or D4 on this diagram,


    tach should be E8 but you will probably need a 12v resistor inline

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