I've read tons of places that you can just wire in the LS pigtail and use the LS sensor for the Vortec 96+ OBS gauge since the LS PCM doesn't care about oil pressure. I wired in mine last night, so I guess I'm about to find out. lol.
I've read tons of places that you can just wire in the LS pigtail and use the LS sensor for the Vortec 96+ OBS gauge since the LS PCM doesn't care about oil pressure. I wired in mine last night, so I guess I'm about to find out. lol.
The plugs were physically the same between the LS and Vortec pressure sensors on my engine. The difference being no back up fuel pump power on the LS. I do notice that the pressure reading on my dash runs between 40 PSI idle to 80 PSI WOT. That doesn't seem correct to me, and it's been that way between ls engines.
This is what I did on my swap.Originally Posted by Chris
That's some good info to know for future reference..thanks for sharing the knowledge
This is what I'm stuck on right now with my swap, can you give me some details? To make things more complicated on myself I decided to swap a 1998 dash into my 1991 to go along with the LS3/TR6060 swap so I piicked up the sender and pigtail from a 1998 and was going to try to wire that in but the LS3 sender is bigger than the truck one so I started looking for an adapter, from what I found I believe I need a M16x1.5 to M12x1.5 but can't find one.
Appreciate any info you can give me, also picked up the 3 wire coolant temp sensor and pigtail so gonna tackle that today.
Rock
Rock,,, you need this .. It will allow you to reuse the oil pressure sensor from your old motor.... swapping the 98 dash definitely add some complication to things...
http://www.ebay.com/itm/LS1-LS6-LS2-...9WAGGw&vxp=mtr
Last edited by 1991SSP; 11-20-2016 at 11:48 AM.
Do you by any chance have the part number of the sensor you used? I've got BWD S4074 sensor and it's way bigger than 1/8 NPT thread. Appreciate the help, gotta get this thing running.
Rock
you will need to use the stock stand off as well from your older vortec engine
The engine was a 1991, no vortec, I couldn't find anyone that had anything that would work, picked up Autometer #2268 that is 16x1.5 with an 1/8NPT tapped hole figuring I could drill/tap it to fit the sensor if need be. I'm going to ask a dumb question (seems too easy so it'll probably never work) before I drill a hole in a $13 piece of brass, any reason you can't just tap the tan wire off the stock LS3 sensor to the tan wire going to the gauge and get it to work?
Rock
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