Here’s a list of Holley 4000 (Teapot) carbs and their original PV numbers.  The Holley List number is used and not the Ford part number.  The application and engine size is shown where applicable.

Carb #            PV#     Application
R-1040A         21        1955 Merc 292
R-1074A         43        1955 Ford & Merc 292
R-1074-1A      43        1955 Ford & Merc 292
R-1074-2A      43        1955 Ford & Merc 292
R-1075A         40        1955 Ford & Merc 292
R-1075-1A      40        1955 Ford & Merc 292
R-1075-2A      40        1955 Ford & Merc 292
R-1076A         43        1955 Lincoln
R-1076-1A       43       1955 Lincoln
R-1076-2A       43       1955 Lincoln
R-1077A         40        1955 Thunderbird
R-1077-1A      40        1955 Thunderbird
R-1077-2A       40       1955 Thunderbird
R-1078A         43        1955 Thunderbird
R-1078-1A      43        1955 Thunderbird
R-1078-2A      43        1955 Thunderbird
R-1094-1A       44       1956 Linc & Cont
R-1094-2A      37        1956 Linc & Cont
R-1094-3A      37        1956 Linc & Cont
R-1094-4A      37        1956 Linc & Cont
R-1161A         28        1956 Ford & Merc 312
R-1161-1A      28        1956 Ford & Merc 312
R-1161-2A      28        1956 Ford & Merc 312
R-1162A         28        1956 Ford & Merc 292
R-1162-1A      28        1956 Ford & Merc 292
R-1162-2A      28        1956 Ford & Merc 292
R-1163A         28        1956 Thunderbird 292
R-1163-1A      28        1956 Thunderbird 292
R-1163-2A       28       1956 Thunderbird 292
R-1164A         28        1956 Thunderbird 312
R-1164-1A      28        1956 Thunderbird 312
R-1164-2A      28        1956 Thunderbird 312
R-1268A          28       1956 Ford T.B. HiPerf, 2-4 Bbl Inst.
R-1434A         32        1957 Ford 2-4 Bbl. 312
R-1437A         32        1957 Ford 2-4 Bbl, 312

Lorena, Texas (South of Waco)

Ebay search for Holley 9594

Hello  Could or would you  share where you found new power valves?  

The power valve in my 55 TBird (4 barrel 292, automatic)  is marked 21, do you think this is too small and causing my hesitation (when I floor the car from a dead stop).   I just ordered a 43   (accelerator pump looks OK)

Nah, what happened is I mis-read your post and for some reason had accelerator pump in my mind (don't ask).

Anyway, yes they are available NOS usually off EvilBay.

The BASIC PART NUMBER is 9594 and is called (by FORD) - JET (POWER).

There are different sizes of course. Are you re-calibrating the 1956 LINC H4000 for a 1957 FORD S/C APPLICATION?

Let me know if you need a special size and I will search through the MPC for your wanted size. They don't give a list of sizes, it is by application.

____________________________

Kultulz:
Glad you recovered, I'll be having a recovery in about 3 hrs. If you look at Ted's posts in this thread he has a picture of maybe twenty power valves, a bunch of different drill sizes, that's what I was asking if they are available anywhere. 

Did the above help any?

____________________________

Hold On.

I am having a senior moment ...

OK, I am much netter now... A little Jack and Coke brought me back  ...

Is this what you are after - https://www.carburetor-parts.com/holley-enrichment-diaphragm-70-45

There are several calibrations so he will most likely need the CARB ID or if you give me the CARB ID, I can post a PARTS LIST so you can decide what calibration you need.

____________________________

Kultulz

I didn't see any power valves on Mike's Carbs site; am I missing it? All kits have the economizer to engage the power valve, spark valve and inlet needle and seat. 

https://www.carburetor-parts.com/holley-4000-parts

____________________________