That hole is for a clamp for the fuel and vacuum lines that run in front of the valve cover over to the carburetor. Should be tapped 1/4-20 I believe.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.