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Old 10-07-2008, 11:06 AM   #7
SSDiv6
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Default Re: motorcraft 4300 carb info

Quote:
Originally Posted by Tom Goldman View Post
Jeff, the problem with 7# and up of fuel pressure only is an issue when running the oem style secondary needle and seat. ....Not an issue when running only a larger primary needle and seat. .....Tom
In the past, I have used the Grose-Jet needle and seat assembly which allows you to run higher fuel pressures without flooding the engine.

They are similar to this picture:



I cannot remember if Jeff Lee tried them ion his carburetor in the past. I have succesfully used them in many foreign car applications, Quadrajets and Webers, allowing me to run higher fuel pressure without overriding the float.
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