Author Topic: 1969 Boss 429 Temperature  (Read 349 times)

paparazzi

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1969 Boss 429 Temperature
« on: June 20, 2022, 08:39:02 PM »
Has anyone ever confirmed the actual water temperature on a 1969 Boss 429 when the gauge sits squarely on the "H"? I am just wondering what the actual temp should be when gauge is on "H"? I am new to this car and  have tried changing the sensor and now trying to confirm if the gauge is bad.
Thanks, Bob

C6ZZGT

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Re: 1969 Boss 429 Temperature
« Reply #1 on: June 20, 2022, 10:46:55 PM »
You should be checking the ohms of the sender .............
« Last Edit: June 20, 2022, 10:51:46 PM by C6ZZGT »
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shelbydoug

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Re: 1969 Boss 429 Temperature
« Reply #2 on: June 21, 2022, 07:59:55 AM »
It should also be mentioned that ONLY the AUTOLITE or MOTORCRAFT senders are accurate. ALL the aftermarket senders are calibrated wrong and read too high. They are both obsolete and command significant premiums now, when you can still find them.

Measuring the OHM's of all of them is the only way to calibrate them.
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Royce Peterson

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Re: 1969 Boss 429 Temperature
« Reply #3 on: June 21, 2022, 06:12:24 PM »
Even some of the Motorcraft senders are way out of specs. Be sure to get one with the red insulator around the center stud. Anything else will be a waste of your time and money. Autolite or early Motorcraft work.
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paparazzi

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Re: 1969 Boss 429 Temperature
« Reply #4 on: June 21, 2022, 09:30:36 PM »
Thanks for all of your helpful comments. Would this apply to 428 Cobra Jets also? I assume the gauges are all the same? Any suggestions on where I might find the correct sending unit?

shelbydoug

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Re: 1969 Boss 429 Temperature
« Reply #5 on: June 21, 2022, 10:12:12 PM »
Post a wanted ad. They are obsolete and not a common everyday occurrence. Relatively expensive as well compared to other aftermarket senders.

You're going to need a little luck on this one.
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paparazzi

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Re: 1969 Boss 429 Temperature
« Reply #6 on: June 21, 2022, 10:18:36 PM »
Thanks again shelbydoug. Just to help with my post, would this be the same sending unit as used in a 69 428 Cobra Jat? If the Boss 429 uses the same gauge then should the sending unit be the same? Thanks, Bob

shelbydoug

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Re: 1969 Boss 429 Temperature
« Reply #7 on: June 21, 2022, 10:39:26 PM »
I believe that it is the same.

Just post a wanted ad here. I suspect that you will receive some offers.
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