I have started getting the 3 94's built for the 57 Bird 312. Making a list of stuff needed from Charlie Price at Vintage Speed. I am using a Edlebrock 573 intake with two ECG 1 1/16" carbs for secondaries that have Vintage Speed aluminum secondary bases; no idle circuits, choke plates, spark valves and new throttle plates that close fully at idle. The primary is a 1 1/16" venturi 2100. What is the best way to determine what power valve or valves to use? Do all three carbs need a power valve?

57 Black Tbird 312/auto

Power valve in only the main carb (I assume the middle). You can get plugs from Charley Price- if you can deal with him. He usually will not return phone calls or emails. I would start with a stock size if the cam is a factory cam. With a high performance cam, you may have to start with one or steps lower.



I have bought parts from him in the past. The only way I deal with him is to order over the internet - otherwise you may not be able to talk with him and watch out for his wife.

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

The end carbs get plugs in the power valve hole. The idle circuits get blocked in the end carbs.



I used a 6.5 power valve.

  Dennis in Lititz PA

Yes, I have read about his cranky ways. I am going through his catalog very carefully and being sure of every part I want. The order will be by internet. I have a stock cam now but thinking of upgrading to Mummert's 270 cam and lifters to go with the aluminum heads. I will start with a 6.5 but which way should I go, up or down, if I get the Mummert cam? I already have Sanderson headers and MSD/Petronix ignition.

57 Black Tbird 312/auto

Just answered my own question about power valve selection by checking the Holley website. Idle vacuum minus 2" or 1/2 idle vacuum to keep the power valve from opening at idle.

57 Black Tbird 312/auto