O2 sensor locations

[1974dodgecharger]

Im getting a O2 sensor and curious would two be better than one and at each  collector?

[justcruisin]

It depends on what you want the o2 for, is it just for a gauge or do you run an injection system that you want to factor in the o2's. If it is just a gauge just one is fine, I placed mine at around 6" down stream of the collector, I didn't want to weld on my coated headers. Place the sensor at an angle so that any moisture will run out, 10 - 2 o'clock.

[1974dodgecharger]

it would be more for tuning for optimizing my fuel buring so I guess one will do. thx 

[rt green]

if I had a choice, I would get two. I would like to know if one bank is leaner/richer than the other when tuning. 

[1974dodgecharger]

alright you convinced me Ill get two....more gauges to look at 

[A383Wing]

you can't go by one bank in tuning...one side of the carb feeds 2 cylinders on the right bank, and 2 cylinders on the left bank....the other side of carb feeds the remaining 4 cylinders

[1974dodgecharger]

even better explanation....gonna get two for sure.  will help my troubleshoot also if one bank is doing something wrong like not firing or something.

[A383Wing]

that it will help in doing, but not carb adjusting for each bank of cylinders