Holley 94 - Thread on fuel inlet

[Big Earl]

Can someone tell me what the thread is for the fuel inlet on a Holley 94 91-99 series? I believe it to be a 5/16", but cannot determine the thread pitch. I need a reducer to 1/4".

[ken ct]

Thread is 1/2x20 straight thread [NOT pipe thread].Original line is 1/4 OD and fittings are on the line are 1/2x20 compression ford fittings . A reducer is NOT nessory. I have the special ford fittings if you need them. ken ct.

[Ross F-1]

A fuel filter can be placed there; Deutsch FF201 sold at AutoZone fit mine (later model than yours), but pretty sure it's still 5/16" for the hose. Why do you want to reduce?

[Rich Overton]

Ken of Ct. is correct. This is a "special" Ford fitting and it is 1/4 inch tubing. You will drive yourself, and your local parts man nuts if you try to find one at your local parts store. Not many older guys left that remember. " Ford had a better idea."

[Dick's Hot Rod Place]

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Napa still carries them in their Weatherhead catalog. The part number is: 59x4. I have found most stores with a good brass inventory have them in stock.