Where is the knock sensor located on a 350 motor with center bolts and the temp sensor

 

Knock sensor is on the passenger side of the block, down low, just in front of and ahead of the starter.

The temp sensor for the secondary fan is in the passenger side head between cylinders number 6 and 8. The temp sensor for the computer to measure the colant temp is up front on the drivers side intake. The temp sensor for the instrument panel guage in on the drivers side between cylinders 1 and 3. Now, did you know you had so many different temp sensors? LOL!

 

I had no idea. I am changing over from a carb setup to tpi. Do I need all those sensors for a TPI set u. Oh yeah I don't have a secondary fan. I still have the fan on my motor. I thought I only might need to use the sensor that in on the head on the driverside of the car

 

The CTS is located in the TPI intake, so you'll be fine there, by installing the TPI, you'll be installing the CTS.

If you look at the bottom of your block, just front of the starter, you'll see a raised boss with a hole that has a plug in it. Use an impact gun to get it out, or you'll nearly be garunteed to break it trying to remove it. The knock sensor goes into that hole.

You do not need the secondary fan switch if you are running the mechanical clutch fan, and you'll use the stock head temp switch for your vehicle's stock gauge.

 

I think that I already have knock sensor there. If I am readin this right there is a sensor right above the or real close to the starter on the block( the sensor has one wire) which I think is the knock sensor

 

Yep, that sounds like the knock sensor.