Check this link:

http://www.thecarburetorshop.com/CarterChevroletW1.htm

And read the third paragraph under "Restoration of the Carter W-1".

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop