What is the differance between the Tillotson XF and X

[INEX1@EROLS.COM]

What is the differance between the Tillotson XF and X ? I have both and plan to rebuild one, which is better? I have a 31 Model A with the touring engine that Swams rebuild years ago that runs fine but the current Tillotson X needs a float

 

[nkaminar]

see https://www.fordbarn.com/forum/showthread.php?t=180289

 

[Herb Concord Ca]

There is no difference between and an X and XF, and the unmarked one. It just depends on who first sold them.

 

[inex01]

Very Good reply, thanks for the laugh!

 

[Dodge]

The difference is the F