Ford Holley 94 carburettor jet sizes

[Jacques Reed]

Good Day Hanno,

Looking at some Flathead V8 Ford hotrod information it appears 7.5 hg is the standard power valve in a stock engine.
Power valves are produced in other ratings such as of 3.5 hg, 4.5 hg, and 5.5 hg but these appear to be for the hot rod market where multiple carb setup are used which results in the manifold vaccuum being greatly altered.
The rating number is supposed to be stamped on the valve. Will have a look at mine to satisfy my curiosity also.

Brgds,