Float Height

[watty51]

When measuring the height of the floats what sort of angle would the carb bodys need to be at for the most accurate level.
I have done some research....some say upside down....some say 90 degree....some say 45 degree.

Any ideas

[Laverda Dave]

I've always measured them on the side with the float tang just touching the needle of the inlet valve. Make yourself a float gauge to set the correct height. There's plenty of threads on here about 400 carbs and float heights.