LT1-LT4 Modifications 1993-97 Gen II Small Block V8

O2 extensions

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Old Oct 26, 2011 | 10:17 PM
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Default O2 extensions

So I know I only have to run the front o2's with my LT headers. What do you guys recommend 12in or 24in and where can I get a set from?
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Old Oct 26, 2011 | 10:44 PM
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From what I've gathered you only need one 12 in extension
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Old Oct 26, 2011 | 10:54 PM
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12", I don't remember if I really "needed" the extension for the driverside when i put my lts on, but I used it so i would be able to route the wires better. You can order them from most sponsors, I prefer ws6store.
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Old Oct 26, 2011 | 10:58 PM
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...or you could just solder more wire in yourself and save $40
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Old Oct 26, 2011 | 11:50 PM
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I think I have an extra 24" one lying around somewhere in the garage... Could let it go pretty cheap. Never used. I bought two from ebay... Only had to use one for pass side.. PM me if your interested.
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Old Oct 27, 2011 | 05:32 AM
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Originally Posted by Catmaigne
...or you could just solder more wire in yourself and save $40
Or risk altering the resistance of the wiring with globs of solder.

Extensions are the better option.
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Old Oct 27, 2011 | 02:25 PM
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If you solder everything correctly, make good connections, and properly insulate each wire the readings will be more accurate than crimping or snap-on extensions.
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Old Oct 27, 2011 | 04:12 PM
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Only need the 12 and I got mine from the WS6 store
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Old Mar 30, 2012 | 11:22 AM
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Rather than creating a new thread -

Has anyone ever needed as long as an 80" extension? - does this length even exist off the shelf?

I have Kooks long tubes and catted Y going on a 97 dual-cat LT1 with 4 O2 sensors. The front pre-cat sensors use the flat 4 pin plug and the rear post-cat sensors use the square 4 pin plug. The 2 fronts and passenger rear i dont need to extend, but the rear driver side is this one in question

Im suprised that this is not a more common need for the LT1 dual-cat cars.. unless everyone is routing their driver side post-cat O2 extension in a different (shorter) path, then please enlighten me. I ran a route for the extension to run with a piece of rope and then measured it- 80" if im generous but i can probably get away with a 72" (6ft)

All of the extension harness lengths i see around are the typical 12" & 24"
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Old Mar 30, 2012 | 11:46 AM
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Originally Posted by StolenRedCamaro
Rather than creating a new thread -

Has anyone ever needed as long as an 80" extension? - does this length even exist off the shelf?

I have Kooks long tubes and catted Y going on a 97 dual-cat LT1 with 4 O2 sensors. The front pre-cat sensors use the flat 4 pin plug and the rear post-cat sensors use the square 4 pin plug. The 2 fronts and passenger rear i dont need to extend, but the rear driver side is this one in question

Im suprised that this is not a more common need for the LT1 dual-cat cars.. unless everyone is routing their driver side post-cat O2 extension in a different (shorter) path, then please enlighten me. I ran a route for the extension to run with a piece of rope and then measured it- 80" if im generous but i can probably get away with a 72" (6ft)

All of the extension harness lengths i see around are the typical 12" & 24"
It's fairly uncommon for people to keep the post-cat O2s after a header install. They are usually deleted altogether and O2 simms (or tuning) eliminates them electronically. Since the ONLY purpose they have is to tell you that the cats are working they don't hold much value on a performance build.
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Old Mar 30, 2012 | 04:15 PM
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i needed a 24 inch extention for the driver side. got it from ws6store


edit: lol just realized how old this thread is

Last edited by BadBirdie; Mar 30, 2012 at 04:17 PM. Reason: oldness
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