<div>
Good question and welcome here at EE<br />
<br />
The answer is easy to solve with an exhaust emission test, which will indicate whether your fuel air ratio is high, low or correct.<br />
With the exhaust emission test results you can adjust your carb jet size to obtain the best fuel economy or best performance as you wish.<br />
<br />
Happy driving.
</div>


Good question and welcome here at EE

The answer is easy to solve with an exhaust emission test, which will indicate whether your fuel air ratio is high, low or correct.
With the exhaust emission test results you can adjust your carb jet size to obtain the best fuel economy or best performance as you wish.

Happy driving.

<div>
I already know it's running too rich. I'm not looking for best economy, I'm wanting to know what the best jet size to use would be, at least as a better starting point.
</div>


I already know it's running too rich. I'm not looking for best economy, I'm wanting to know what the best jet size to use would be, at least as a better starting point.

<div>
The pros usually always know what jet sizes to use based on the intake carb and exhaust. I thought I would try here. Guess I need to post this in a classic car forum where I've done before. <br />
<br />
Thanks for the help. Maybe it will help someone else.
</div>


The pros usually always know what jet sizes to use based on the intake carb and exhaust. I thought I would try here. Guess I need to post this in a classic car forum where I've done before.

Thanks for the help. Maybe it will help someone else.

<div>
<div class="content wysiwyg-content">
No idea if this site allows car questions so here goes :).<br />
<br />
The car is a classic 65 Ford with a 289. <br />
It has dual exhaust and an Edelbrock Performer 289, dual plane manifold and a Holley 4150 carb which were taken off another car.<br />
<br />
The jets in the carb were installed for a much larger application and I need to know what size jets should be installed for this kind of application.
</div>
</div>


No idea if this site allows car questions so here goes :).

The car is a classic 65 Ford with a 289. 
It has dual exhaust and an Edelbrock Performer 289, dual plane manifold and a Holley 4150 carb which were taken off another car.

The jets in the carb were installed for a much larger application and I need to know what size jets should be installed for this kind of application.

Best carb jet size? 289 Ford

In addition to ignition, power and monitoring gauges and lights, today's motor vehicles feature computerized engines, transmissions and braking systems, electronic mapping systems, Bluetooth and Internet connectivity, sensors that detect other vehicles, motorized seats, and digital audio and video systems; several manufacturers are producing electric and hybrid automobiles and self-driving cars.

Automotive

A miscellany is defined as a "collection of various pieces of writing by different authors", but it has come to mean something "Of items gathered or considered together of various types or from different sources" or "a collection or group composed of members or elements of different kinds". The word "miscellaneous" comes from the Latin word "miscere", meaning "to mix." You might have heard the expression "a mixed bag," which applies when you don't quite know what you're going to get. More commonly, a miscellaneous group is made up of an odd group of things that don't fit anywhere else.