Thrust issues with AFR gauge and Brawler carb

Dusterguy said
I occasionally like to drive it hard. I bought the afr meter to get most out of the new carb. And if I could get better fuel mileage that would be a bonus.

Im aware that afr meter might show falsely reading in idle with big cam overlap. I tuned idle mixture with vacuum gauge to get maximum vacuum. At that point afr meter shows 12.5 to 12.7. Any leaner than that idle quality start to get worse.

At 3000 rpm cruise speed AFR is 14.5. At slow speed steady driving around 2000 rpm afr gauge shows 13.3

Here is more info what you asked:

-Plugs are about 2 year old. NGK BCPR6E
-Electric choke is working properly
-Have not cleaned up any passages in carb. Just visually inspectetd inside that there is no debris or anything
-Idle air jets 70
-High speed air jets 31
-No emulsion jets. Just 4 empty threaded holes in metering block.
-Idle fuel restrictor jets are at the top of metering block. Had not any markings so I dont know what size they are.
-T-slot expossure, have not yet looked up.
-o2 sensor is maybe 5 to 10 inch from collector.

-PCV is in use
-Timing 20 at idle. Total timing 35. All in at 2500 rpm. Plus vacuum advance 7.

Engine is 360. 10:1 compression ratio
RHS iron heads from IMM
Comp Cams extreme energy 244 at 0.050" https://www.compcams.com/xtreme-energy-244-252-solid-flat-cam-for-chrysler-273-360.html
RPM intake
shorty headers

As Bewy pointed out you are a range cold on plug.

Are the numbers you are giving numbers YOU measured or are they from the web?

You can NOT trust those numbers and no one can give you any advice without knowing exactly how the carb is tuned right now.

Im assuming you have no brass in the emulsion holes. That means you have four open holes. That’s insane. You can’t even behind to tune that.

You also need to determine the size of the hole in the emulsion stack. I’ve seen, from Holley right out of the box as small as .024 (which may not be bad) to as large as .034 and that’s too big for anything I’ve ever tuned.

Also, you need to plug the second hole from the top and the bottom hole for starters. And you have to verify what size the holes are.

You need to verify all the bleed sizes. They could be anything so verify.

You will almost 100% of the time need to take the idle feed restriction out of the upper hole it’s in and move it to the bottom.

You never want the idle feed jet not have fuel above it.

That will get you started but you need to verify what exactly you have. Then you can figure out what to do. Outside of that it’s all guesses.

Edit: your all in by 2500 timing curve is killing power.