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- - O2 sensor location (https://67-72chevytrucks.com/vboard/showthread.php?t=504493)

upon1

01-20-2012 06:32 PM

O2 sensor location

Just getting ready to do the exhaust on my 55 and just wanted to know if the placement of the o2 sensor is important. I know I can get away with just the top sensors.
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BR3W CITY

01-20-2012 06:48 PM

Re: O2 sensor location

within the first 6-10" of exhaust seems pretty common. Its important to try to keep the sensor on the top part of the pipe, from 10-2oclock positions.
Yes, you only need the upper 02's.

Gunny Davis

01-26-2012 10:43 PM

Re: O2 sensor location

gotta ask... as far as rear O2s are concerned why arn't they needed and if I have them already, would it do any good to install them?

usmcchevy

01-26-2012 10:46 PM

Re: O2 sensor location

Quote:

Originally Posted by Gunny Davis (Post 5148125)

gotta ask... as far as rear O2s are concerned why arn't they needed and if I have them already, would it do any good to install them?

They are only there to make sure the cats are doing their job. If you have no cats, no sense in having the rear O2's.

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