LS3 engine

Ken Roberts

Supporter
You can modify the valley cover by removing the oil pressure sensor boss and adding a right angle fitting (This is preferred if you want to retain the OEM oil pressure sensor). Other builders if using a 1/8" npt type of sensor for aftermarket gauges have removed the boss and then welded the oil passage hole closed. They then relocate the sensor to a passage just above the oil filter. https://www.lsxinnovations.com/product/ls-oil-port-adapter-dual-18-npt/

Here is the sensor adapter. https://store.katechengines.com/oil-pressure-sensor-adapter---gen-4-reverse-intake-p371.aspx

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You can modify the valley cover by removing the oil pressure sensor boss and adding a right angle fitting (This is preferred if you want to retain the OEM oil pressure sensor). Other builders if using a 1/8" npt type of sensor for aftermarket gauges have removed the boss and then welded the oil passage hole closed. They then relocate the sensor to a passage just above the oil filter. https://www.lsxinnovations.com/product/ls-oil-port-adapter-dual-18-npt/

Here is the sensor adapter. https://store.katechengines.com/oil-pressure-sensor-adapter---gen-4-reverse-intake-p371.aspx

View attachment 104992
That will do it. Thank you so much. Did you have to extend what I assume is a 1/4” vacuum line on the other side by just replacing the tube with one you ordered or just something sold by the foot at parts store or hardware store?
 

Ken Roberts

Supporter
I used a tube instead of a hose. You could buy aluminum tubing and bend it with a tube bender than just use a short piece of emission hose at either end.
 
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