Well I decided to modify the KMJ Blocks. They come pre drilled 4-40 so I am glad I got the small stuff. I am working with a Holley 850 Double Pumper with the choke assembly removed but the tower still there.
The emulsion has 4 holes I blocked 2 & 4 and 1 & 3 have .028 Restrictors in them. All of the stock restrictors are .028 so I did not have to drill them. Stock uses 4 on each side / each bowl so 16 total. I now am only using 8 total, 4 front and 4 rear.
The Idle Feed Restrictors I moved from the top which is out of the fuel to the bottom in the fuel. The stock size restrictor was .039 , the bottom hole is the correct size to just tap to 6-32 without drilling them bigger. I put in .036 Restrictors by drilling out my brass plugs.
Front power valve will be a 6.5 to start the PVCR restrictors stock are .0635 so I left them alone for now. The back will be plugged.
Next I will take the carb apart and drill and tap the Idle Air Bleed Restrictors to a .075. The Main Air Bleeds will get a .028 after they are also drilled and tapped.
The Pump Shot in front will be a 50 , rear a 30 and I will start off with #40 nozzle style pump squirters. Most likely I will replace the cams to Pink to start. We shall see.
Notice the glasses and magnifying glass. These are the smallest holes I have ever drilled! I used trans assembly gooop for lubrication. The shavings stick to it very well.
View attachment 1714726695
View attachment 1714726696