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W body 3.1 OBDI to 3.4 DOHC OBDII

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  • W body 3.1 OBDI to 3.4 DOHC OBDII

    I did a quick search, but didn't come up with much that seemed helpful.

    As the title says, I have a '91 Lumina with the 3.1/3spd that's getting quite tired (almost 190k miles). I have a chance to grab a 96 LQ1 w/90k miles and a 4t60e w/60k miles for a good price.

    Has anyone converted a first gen W body to OBDII? Would it be easier to get an earlier OBDI harness and PCM for the LQ1 and swap it in that way?

    Thanks for any help you can provide, I'm not very proficient in FWD technical knowledge, I'm an Camaro & Firebird guy mostly....

    - Justin
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