O2 numbers?

[DesertRat]

I just test drove my Barracuda again with a working wideband. Up to temperature I consistently saw 11's and 12's. Not much above or below that regardless of RPM or load. I don't think the secondary's ever kicked in. The motor is a newly rebuilt 273 4V-904. I am wondering what numbers I should be shooting for up to temperature and 2600 to 3000 rpm.
Thanks-----------DR----------------

 

[C130 Chief]

Shoot for 12-13 under load (wide open throttle) and 15-16 at cruise. What carb are you using?

 

[72Dart6pack]

12.6 to 13.1 A/F at Wot. 14.6 A/F at part throttle. 15 to 16 is way too lean. Been doing Dyno work for the last 36 years for a big 3 Auto company. I kinda know the topic well.

 

[DesertRat]

Holley small 4V with vac secondarys. Looks like I am in the game. Never saw 13's but saw high 12's at WOT. When I pulled in parked it the AF went to 14+ at idle.
I need to check my Lokar stuff to see that I am getting WOT and proper kickdown pull. That will be next.
Sounds like I am still a little rich though-----------------
BTW, thanks guys!

 

[72Dart6pack]

Been doing this before O2 sensors were invented. You still have to play with hooks rods & jets. But easy peasy now.

 

[C130 Chief]

go 2 #s leaner on primary jets, and be ready to go 2 more