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Old 10-27-2019, 06:31 AM
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compsur compsur is offline
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Default 67 ATC/Rally Gauges--Temp Switch/Sensor

I need some good forum advice. I have just completed installing ATC AIR into my wagon. It took me more than 2 years salvaging parts from where i could find them. Everything works like a charm. Now ready to hit the road for some local but also POCI events down the road. I have just one conundrum. Since i was at pulling the dash apart I also installed the Rally Gauge cluster with speed reminder. As everyone is aware this was impossible to order from the factory if the order had ATC. I have seen the question asked before in this forum, why? This is because the ATC requires the Temp. Switch while rally gauges requires a Temp. sensor. I want to install both. I would like to keep the Temp switch in its original location on the intake manifold (Pic-green circle) and as there is a flat dimple area on the other side of the Intake (pic-red circle)....would it be possible to drill and thread a new opening for the Temp sensor? As for the wiring, I can make that work but i am not an expert on drilling and threading into a manifold. Your thoughts, difficultly, can it be done, what do i need to do it? A few pics attached.
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1967 Bonneville Sport Coupe (Plum Mist), Org. paint, Org. 38K miles
1967 Bonneville Convertible (Montego Cream, Cal Car, 105K miles
1967 Executive Wagon (Plum Mist), Org. paint, Org 35K miles
1981 Bonneville Brougham Coupe (Black) Moonroof, Org. 11K miles
  #2  
Old 10-27-2019, 01:10 PM
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stevep stevep is offline
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Remove the manifold before you drill it. You need to find the proper tap which will give you the final drill size.

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  #3  
Old 10-28-2019, 07:43 AM
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compsur compsur is offline
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Quote:
Originally Posted by stevep View Post
Remove the manifold before you drill it. You need to find the proper tap which will give you the final drill size.
So its better to remove the manifold first?

__________________
------------------------------------------------------------
1967 Bonneville Sport Coupe (Plum Mist), Org. paint, Org. 38K miles
1967 Bonneville Convertible (Montego Cream, Cal Car, 105K miles
1967 Executive Wagon (Plum Mist), Org. paint, Org 35K miles
1981 Bonneville Brougham Coupe (Black) Moonroof, Org. 11K miles
  #4  
Old 10-28-2019, 09:36 AM
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A390GT A390GT is offline
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Before you drill your intake
Does anyone make a thermostat housing with a temp sensor bung for a 400?
I used one like this on a Chevy 350 a couple of years back
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  #5  
Old 10-28-2019, 06:28 PM
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stevep stevep is offline
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Quote:
Originally Posted by compsur View Post
So its better to remove the manifold first?
I would so you don't have chips floating around in there.

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  #6  
Old 10-30-2019, 05:35 AM
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compsur compsur is offline
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Quote:
Originally Posted by A390GT View Post
Before you drill your intake
Does anyone make a thermostat housing with a temp sensor bung for a 400?
I used one like this on a Chevy 350 a couple of years back
i like that idea....would be great if i dont have to drill.

__________________
------------------------------------------------------------
1967 Bonneville Sport Coupe (Plum Mist), Org. paint, Org. 38K miles
1967 Bonneville Convertible (Montego Cream, Cal Car, 105K miles
1967 Executive Wagon (Plum Mist), Org. paint, Org 35K miles
1981 Bonneville Brougham Coupe (Black) Moonroof, Org. 11K miles
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