Eric from Victory Racing helped me with this! Thanks a bunch!

Asked this on MIFbody and didn't get any solid input so I'm hoping someone will help me here.

Before my 97' Z28 (LT1, M6) goes into storage this year I plan on ditching the shorties and installing some Long Tubes I purchased (Jet Hot, Race style). I know I'll need new Exhaust gaskets, EGR plates, and O2 Extensions. My problem is finding out what O2 Extenders i'm going to need. I can't seem to find if I need a flat or square harness and what length am i going to need (12" 18" 24")?

Could anyone who has done this please take a few and tell me what i'm looking for. I tried to google it but i don't want to trust just anyone's opinion and start buying stuff based on what the internet says.

Thanks for your time
-Greg

 

On my 94 mine were the flat connectors, not sure if it changed in 95. I also got the 24" o2 extensions and they were plenty long i ended up have to zip tie a bunch of the slack up so you should be good with 18" and maybe even just a 12" on the drivers side.

 

For your 97, if you plan on keeping all the O2s, you are going to need 2 extensions: one 18" flat connector extension for the passenger side header O2, and one 24" square connector extension for the passenger side after-cat O2.

The driver side O2 should reach the original harness, and the driver side after-cat O2 should reach the connector that comes off the tranny wiring harness.

I got mine from marylandspeed.com. They also have the EGR plates you need.