Yesterday me and a friend were looking at the exhaust system on my car. It has the 305, with the electronicly controled carb. He pointed out what looked like an o2 sensor on the driverside exhaust manifold. I looked on the computer at Auto Zone and they have an o2 sensor for my car. How does this work? Also, if I pu shorty headers on with a y pipe, will I have to get say a Performer carb that doesn't need any computer to tell it about stuff? What other kinds of sensors are there that I thought only the fuel injected cars had that might surprise me?

Thanks

 

it probably was an 02 sensor. If you get headers you can get an 02 fitting and weld it in.

 

Basically, Computer controlled carbs use a computer, and the computer uses the O2 sensor to determine rich/lean conditions. This in turn, gets feed back to the carb, and therefore the carb will run a little richer or a little leaner. If you wish to get rid of the O2 sensor, you will have to have a regular carb, and a different distributor too, as the computer controls that too. In the long run, computer controled is better for cleaner running, non-computer controled setups are cheaper, and can gain you more horsepower.

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Rob
'86 TA 305 TPI
Gutted MAF
Ported Plenum
TB Bypass

 

True in theory, not if your parts are 16 years old.

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--Steve S--
1984 Trans Am 305 LG4, 5 speed
Daily Driver, Flowmaster 80 Series
NOW FEATURING: Holley 600 cfm & vacuum advance