lsx swap in 95 obs close to being finished

[Maverick]

The build is a budget build just thought id mention that due to money being tied up for school

[Bear]

Before you commit to the 3 wire you might want to read this, it was in the stickies.

http://www.ls1truck.com/forums/showt...219#post432219

[Maverick]

Well guess I will be doing the one mickeymotormount posted didnt see that sticky about not reading properly

[Jeebalow]

If you have access to a lathe it's very straightforward. Here is a post from another forum from when I rethreaded one on a lathe.

Finally got some time to get in the shop and work on rethreading the coolant temp sender to fit the 5.3... I am assuming the 243 heads have the same port and are of the same thread. If not I'll have to re-do this. Any way here are some pictures during and after:





M12 x 1.5 Die






Done:


I'll use a crush washer to seal it up, just like the adapter comes with.

[Mickeymotormount]

Nice work. I wish I had the machinery to handle such tasks.

[Jeebalow]

Nice work. I wish I had the machinery to handle such tasks.

Hey thanks! The machinery isn't quite mine, but I have a key to the shop. We have about ten manual lathes, ten mills, 4 (soon to be 5) CNC 3 axis vertical mills and 2 CNC Lathes. I only have about a little over a year left there though. I'm going to miss it.

[gagliano7]

Before you commit to the 3 wire you might want to read this, it was in the stickies.

http://www.ls1truck.com/forums/showt...219#post432219

I put that 3 wire sensor in my 1992 chevy pickup and the gauge reads perfect.

[Jeebalow]

I put that 3 wire sensor in my 1992 chevy pickup and the gauge reads perfect.

I don't think the gauge is what I would be worried about. It's the PCM thinking your engine is colder than it actually is and not adjusting the air/fuel/spark correctly. Maybe check the to see what the PCM is reading? If that seems fine, then you should be good. The reason it may not work is the PCM uses a 5V reference, and some gauges use a 12V reference. So the 12v signal will interfere with the 5V signal. I would also be worried that even if they're both 5V that one signal would throw the other one off because the gauge signal literally goes through the brass into the head to ground.