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Old 01-31-2021, 01:17 AM   #74
Nick_R_23
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Join Date: May 2016
Location: Willow, Alaska
Posts: 837
Re: 1978 Chevy K20 longbed with nearly 500,000 miles! LS Swap begins!

Started on the driver’s side today! This will go a lot smoother now that I’ve figured out what’s happening on the passenger side.



Started with the reducer for the header pipe.



Set up the adapters for the catalytic converter.



Decided where the O2 sensor was going to mount. I ended up going with just after the collector on the drivers side since there was quite a bit more room.



Bung installed!



Header pipe mounted.



Catalytic converter and muffler mounted.



Tailpipes mounted over the axle.





Approximate mounting once everything gets bolted together.





And as a final touch, I installed fire sleeve over the length of fuel line that sits nearby the pipe. It probably wouldn’t have been an issue as it’s not super close, but definitely better to be safe than sorry when dealing with fuel!

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