Wideband O2 Sensor location advise

mullinax95 said

I bought a AEM Wideband to install in my 67 cuda in order to nail down the AFRs.

What I have is a Eddy Airgap intake with Holley 750 HP carb, TTI headers, and X-pipe.

I don't have a open spacer under the carb in order to combine both left and right venturies for a correct signal to the O2 sensor. I have such close hood to carb gap that I can't install a open spacer.

The question I have is where is the best location for the 02 sensor? The question almost answers itself because there really isn't anywhere else to install it.

However... you might know a alternative or something that I'm over looking.

Thanks
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I assume you are going to permanently mount it.

The O2 sensor itself can be mounted at or just after the collector anywhere on the pipe except at or near the bottom of the pipe, Mount it somewhere it is up and out of the way.

Your split plane manifold feeds two pairs of cylinders on either side of the motor. In other words two cylinders on each side. So, don't worry too much about only having the sensor permanently mounted on just one side. I have a dual O2 sensor wideband, and the readings are virtually the same on both sides of my motors.

You can weld a bung on each side of the exhaust, verify both sides are essentially equal, or not and then leave one side plugged. Use anti-seize on the bung threads, but be careful not to get any on the O2 sensor tip.