Temp sender location 427
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,349
Likes: 34
From: Porterville Ca
Temp sender location 427
My 1969 C3 is getting close to going on the road. I found the temp sender wire in the harness by the alternator, but no sending unit. It has headers and I don't see a plug where the sender would go. The (GM) intake has a bung on the front, but it's not drilled and tapped. I'm thinking this is going to be my best bet. I thought about getting a thermostat housing with a fitting, but it won't be accurate until the thermostat is open. I'm also suspecting that housing wouldn't have a large enough hole to fit the correct sending unit. I'm open to all opinions at this time. Thanks!
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,349
Likes: 34
From: Porterville Ca
Thanks,
I'll triple check after work. I remember them being there, but couldn't see anything. A previous owner installed headers and I haven't switched back yet. I looked on both sides before work with a mirror and flashlight and didn't see any sender or plugs. I'll check again. At least I know where to look now.
I'll triple check after work. I remember them being there, but couldn't see anything. A previous owner installed headers and I haven't switched back yet. I looked on both sides before work with a mirror and flashlight and didn't see any sender or plugs. I'll check again. At least I know where to look now.
Burning Brakes
Joined: Jan 2003
Posts: 961
Likes: 275
From: Frederick MD
Thanks,
I'll triple check after work. I remember them being there, but couldn't see anything. A previous owner installed headers and I haven't switched back yet. I looked on both sides before work with a mirror and flashlight and didn't see any sender or plugs. I'll check again. At least I know where to look now.
I'll triple check after work. I remember them being there, but couldn't see anything. A previous owner installed headers and I haven't switched back yet. I looked on both sides before work with a mirror and flashlight and didn't see any sender or plugs. I'll check again. At least I know where to look now.
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,349
Likes: 34
From: Porterville Ca
It'll be several days, but I'll remove the header and take a better look. Nothing to see with the headers on. I'm ashamed to say, that I've had this car for 22 years and it's finally getting on the road. With that said, the headers have probably been on long before China made and chit headers. It was last registered in 1986, back. At least in California, the only header companies were Hedman, Hooker, Blackjack and Cyclone, at least back then they are all made in "Merica!!
And yes, I looked again, between cylinders 3 & 5, nothing visible and I couldn't feel anything with my fingers. We'll see.
And yes, I looked again, between cylinders 3 & 5, nothing visible and I couldn't feel anything with my fingers. We'll see.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,247
From: US-PNW
Look on the other head in the same general location. Do you have anything on that side like a sender sticking out? The heads are the same casting, so the port is going to be there too but may likewise be covered by the header flange. While the '69 originally had the sender on the driver side, your engine's last build may have installed it on the passenger side.
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Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,349
Likes: 34
From: Porterville Ca
Look on the other head in the same general location. Do you have anything on that side like a sender sticking out? The heads are the same casting, so the port is going to be there too but may likewise be covered by the header flange. While the '69 originally had the sender on the driver side, your engine's last build may have installed it on the passenger side.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
My 1969 C3 is getting close to going on the road. I found the temp sender wire in the harness by the alternator, but no sending unit. It has headers and I don't see a plug where the sender would go. The (GM) intake has a bung on the front, but it's not drilled and tapped. I'm thinking this is going to be my best bet. I thought about getting a thermostat housing with a fitting, but it won't be accurate until the thermostat is open. I'm also suspecting that housing wouldn't have a large enough hole to fit the correct sending unit. I'm open to all opinions at this time. Thanks!
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Thanks! If you can post a picture, it could be that someone blocked it off or put on different heads that don't have the port drilled and tapped.
Melting Slicks
Joined: Jul 2005
Posts: 3,389
Likes: 83
From: Norfolk Virginia
My engine builder told me to put the sender as close to the thermostat as I can. I'm running a Edelbrock Performer intake and there is a threaded port right next to the thermostat housing.