Quote:
Originally Posted by dmir55
Use a 1/4 32 NEF tap to 'fix' the threads for the jets. If you don't have much room under the jet, use a bottoming tap. Or you can grind the end of the tap flat. Than you can use Holley jets. I have done this on several carbs and haven't had problems. If you have metering rods just leave then out. Good luck and happy motoring.
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I would like to add that, in my opinion, it is not a good idea to drill jet. The bit will leave strange marks in the bore. And how will you drill all the jets the same. Maybe if you used a fixture and honed the jets it might work.