Can someone educate me on online 6 coolant temp sensors

[chevyguyase]

I have the same coolant sensor hole set up. I can not get a correct reading out of the coolant temp sensor hole in the head. I think because it is to close to the exhaust port. It reads way to hot. I've tried 3 different gauges. I do have my mechanical under dash gauge hooked up to the hole in the head and it constantly reads 250+ degrees. I have to keep my EFI temp sender in the hole in the thermostat housing because I need an accurate input for the ECM. They make a thermostat housing with 2 sensor holes in it, but can't get my hands on one. They also make the part that the thermostat housing bolts to with a sensor hole in it, I can't find one of those either.

[67 twins]

Originally Posted by chevyguyase

I have the same coolant sensor hole set up. I can not get a correct reading out of the coolant temp sensor hole in the head. I think because it is to close to the exhaust port. It reads way to hot. I've tried 3 different gauges. I do have my mechanical under dash gauge hooked up to the hole in the head and it constantly reads 250+ degrees. I have to keep my EFI temp sender in the hole in the thermostat housing because I need an accurate input for the ECM. They make a thermostat housing with 2 sensor holes in it, but can't get my hands on one. They also make the part that the thermostat housing bolts to with a sensor hole in it, I can't find one of those either.

Go to 12bolt.com Tom has everything you need for these sixes including the thermostat housings with extra holes. Have one on my 292

[Short 3/4]

Originally Posted by 67 twins

Go to 12bolt.com Tom has everything you need for these sixes including the thermostat housings with extra holes. Have one on my 292

Thanks for the info, will check it out
Tom