Hey everyone,
Just got my ls swap running in my 1983 Fairmont (Gen 3 6.0, 823 heads, .600/.600/224/238 cam) and my o2 sensors only read between 440 and 450mv ish. I repinned each bank to a different sensor during the swap (passenger has a 4-pin, flat plug, and driver's has a 4-pin square plug). P59 ECU is from a 6.0 Yukon, dbw. My question is, do I need to grab o2 sensors from that specific car? From what I see on RockAuto and LOJ, the sensors are compatible from 2003-2007. Here is the base tune if maybe if it's the tune.
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Fairmont Base Tune.hpt